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-- ;£21, linco first discovered by Dr, Copeland in | Annapolis ; the remainder of the library and
the above-excepted instruments being retained OBSERVATORIES.- Professor Holden, late of the as a portion of the equipment of the National Washburn Observatory, has been elected, by the Observatory, to which also will be assigned the rustzes, President of the University of Cali- remaining officers of the astronomical staff. fornia and a director of the Lich Observatory. At the instigation of M. Folie, a director of The mounting of the 36-inch objective has been the Brussels Observatory, the Cointe Observaintrusted to Messrs. Warner & Swasey, of tory has been founded in Belgium to be attached Cleveland, Ohio. The telescope tube will be to the University of Liége, for the instruction nearly 60 feet long, with a diameter of 42 inches of the students in astronomy and geodesy, as The mounting is so arranged that all the motions well as for making regular observations to form nopircel in working the telescope can be con- the basis for special researches. The Observatrolled by the observer at the eye end, using the tory is furnished with a meridian circle having minimum of physical exertion. A photographic a telescope with an objective of 6-in. diameter; objective will also be supplied with the instru- an equatorial by Cooke & Sons of York of 10-in.
aperture, and shortly to be aílded a complete A not her new observatory is abont to be set of inagnetical and meteorological apparatus. Established in America, and is the gift of Mr. Mr. G. R. Rogerson, F.R.A.S., of Liverpool, R. McKim of Maclison to the Pauw University, has presented his Observatory to the Liverpool India na. Among other instruments it is to be College, of which he was an old pupil. The fitel with an equatorial of 9'2 inches cleur Observatory contained an equatorially-mounted aperture, the dome for which is to be made by refractor, spectroscope, micrometers, &c. Messrs, Wamer& Swasey with a peculiar system this munificent gift Mr. Rogerson has also of friction-rollers, and capable of being moved added his astronomical library. tounil with a pull of only 12 lbs, Dr. T. P. John The annual visitation of the Royal Observais to be the first director,
tory, Greenwich, took place on June 5th last. An observatory has been crectel at Kis: The Report read to the Board of Visitors states Kartel, near Budapest, by the Baron Podma. that the usual routine observations of the Sun, niezky, furnished with a 7-in, achromatic, Moon, and Planets have been kept up during Zöllner spectroscope, and other smaller in the past year to which the report applies, and struments, It is intended to be devoted to stars from a working list containing 2,750 stars. physical observations of the Sun, Moon, and in the Spectroscopic Department the determina. planets, as well as to the observation of Doubletion of the motion of stars in the line of sight Stars and Nebule.
has been followed up. Daily photographs of the Votwithstanding the unsatisfactory condition Sun are also taken on all occasions when the of the financial position of the Harvard College weather permits. The photographs show a Observatory, the photometric and meridian marked dininution in the areas of spots and work has been pursued with much vigour. faculæ in 1885 as compared with 1884, the mean Observations are being made by Professor daily area in 1885 being only three-quarters of Rogers, with the meridian circle, for a cata. that in 1884. On twelve days the Sun's disc logue of Polar Stars. Investigations in stellar appeared to be entirely free from spots. The photography are, at the same time, being carried manufacture of the new object-glass of 28 inches,
It is found that trails can be obtained on to be mounted on the south-east equatorial, has the plates of stars near the Equator down to the been intrusted to Mr. Grubh) of Dublin. By an oth magnitude, by allowing the image of the star arrangement for separating the lenses, it is to to traverse the plate by the diurnal motion, and be made available for photography. Mr. Chance (if stars near to the pole as low as the 14th mag- has alrendy cast a flint disc which promises well. nitude. Using a large prism in front of the lens, The present object-glass of 13 inches is to be the spectra of the stars as small as the 8th inag- adapted to photographic purposes by the intronitude have been obtained, from which prints duction of another lens in the cone of rays, could be taken on paper showing distinctly the about 30 inches from the principal focus, which lines in the spectrum.
it is expected will correct the chromatic uber| The committee appointed to consider the ration of the object-glass without altering question of erecting a new Naval Observatory materially the focal length. at Washington, have reported to the Secretary At the Paris Observatory stellar photography of the Navy that it is advisable at once to occupies a prominent place. The great nebula proreul with the erection on the site purchased in Andromedi, showing the Nora and nucleus of for the purpose in 1880, the name to be the nebula, have also been photographed. By changed from that of the United States Naval / using a prism having an angle of 5° before the Observatory to National Observatory of the object-glass, a large number of beautiful stellar United States, and to be under civil adminis. spectra have been obtained, including the spectration. The instruments of the present Obser trum of Gore's Nora Orionis. Admiral Mouchez vatory, excepting the 26-in. equutorial, transit- points out the great advantage photography circle, and prime vertical transit, to be truns. possesses over cye-observations in the measure. ferred to the Observatory at Annapolis, which is ment of position, angle, and distance of double to be further enlarged, if necessary, to serve stars, where the components are of very unthe wants of the nuval service, whether prac equal magnitude. In cases of this kind the eye tical, scientific, or educational, and be under the of the observer is dazzled by the light of the direction of the Navy Department, and to be brighter object, so much so as to be frequently called the Naval Observatory of the United unable to keep the smaller star steadily in view. States. Such members of the old Washington The photographic plate has no retina to be Observatory as may be required to work the dazzled, and only asks for an exposure suffi. instruments, and take charge of those books of ciently long to impress the image of the smaller the library which refer chiefly to navigation, star on the sensitive surface. will also be transferred to the Observatory at M. ('ruls, the Director of the Rio de Janeiro
Observatory, has been commissioned by the exposed at Harvard in November, 1885, but was Emperor of Brazil to procure for the Observa- taken to be at that time a defect in the film. tory a photographic equipment similar to that The MM. Henry have also been able to obtain of the Brothers Henry at Paris; and to co excellent photographs of the planets, and the operate with other Observatories in the proposed satellite of Neptune has been photographed in photographic survey of the sky.
all parts of its orbit. Not only in Paris or An equatorial refractor of 10 inches aperture Amerien, however, has photography been thus and 10 feet focal length has been installed in made use of. In England Mr. "Isaac Roberts the Robinson Memorial Dome nt Armagh, and is has produced results not inferior to those of being used for micrometrical observations of ne. the MM. Henry. Public observatories in bula, under the superintendence of Dr. Dreyer. England are experimenting on processes and
A great catalogue of stars is promised from methods. the Madras Observatory. The total number of The usefulness of photography in charting Observations made there since 1862 to the end the stars is now so well recognized that, in order of 1884 amounts to 51,722. The separate results to make work of this kind valuable in the and annual catalogues will fill eight volumes, highest degree, and to avoid the waste of work which will produce a final catalogue of about which would be the case if each Observatory 5,000 stars, reduced to the epoch 1875.
followed its own practice, it has been proposed A new Observatory, well supplied with the best by Mr. Gill, Her Majesty's Astronomer at the inodern instruments, is to be built at La Plata, Cape, that a meeting of astronomers should be in the Province of Buenos Ayres. The proposed held in 1887 to consider the details of a scheme equipment is to consist of a retlector of 3172 inches for producing a general photographic map of in inmeter, an equatorial coudé of 17 inches, the heavens, in which the principal Observa. an 8-in. transit, an altazimuth, and apparatus tories in all parts of the world should take a for celestial photography. A time signal ser share. There are at the present time enongh of vice is also to be instituted.
telescopes of the necessary aperture available to METEORITES.-On the evening of November make the work, steadily carried on, not of such 27th, 1885, the great shower of meteorites was an overwhelming nature as woulil at first sight generally observed over Englanıl and the Cono appear. tinent. This stream is believed to be connecteal The MM. Henry have compared their with the famous comet of Biela. Much cloud photographic map of the Pleiades, alluded to prevailer over England, and in many places above, with that of M. Wolf, published in only a very partial view could be obtained of vol. xiv. of the Mémoires de l'Obxerratoire de the display. 'At Keswick, where the weather Paris, and point out some of the advantages was fine, they were observed to follow ench in this work of star-charting which photoother in snch rapid succession that they could graphy possesses
direct observations. not be counted. At Leicester also they were many faint stars near to bright ones were well observed. At Greenwich, between 6 and thus, for the first time, rendered visible; the 7 o'clock, they were observed to fall at the rate photographic map containing 1,421 stars, while of
zo or 40 per minute. At Oxford, soon after Wolf's map showed only 625, the apertures of 7 o'clock, 60 were counter in a minute. The the instruments used being nearly alike. accounts from Persia, Greece, and Italy all Towards the end of 1885 the measurement of agree in describing the shower as very fine. the 700 photographs obtained at the varions Most of these meteors showed short paths. Mr. French stations of the Transit of Venus in 1882 J. Rand Capron, observing at Guildown, put the was hegu. It was expected that they would be time of richest display at 7h. som. p.m., when finished in about fifteen months. they were falling at the rate of 29 per minute. OBITUARY.-On December 22nd, 1885, Dr. J. C. A few of the observations, when the shower was Draper died, in his 51st year. He was well thickest, gave from 40 to 50 per minute. The known as a spectroscopist, and when his brother, sky at Guildown, excepting for a short interval Dr. Henry Draper, announced his discovery of about 7.30 p.m., was more or less cloudel, and what he helieved to be bright lines of oxygen in Mr. Capron thinks that possibly on this account the sun, he published a series of measures of the numbers may have been under estimated. (lark lines which he considered belonged to the M. P. F. Denza, it the Moncalieri Observatory, spectrum of that gas. Dr. J. C. Draper had counterl 3,954 meteors during the four hours and held the chair of Natural History in the Unieight minutes which elapsed between 6 p.m. and versity of New York since 1863, and that of 10.8 p.m., four observers being employed in Chemistry in the medical department of the Couting most of the time. M. Denza calculates college from 1866. that with four observers at work and a perfectly Professor Dorna, director of the University Clear sky they would in the same time have Observatory at Turin, died on August 19th, He registereil 62.300.
was appointed to succeed the late Professor STELLAR PHOTOGRAPHY.-The application of Plana twenty-one years ago. photography to theinapping of the stairs, nebulæ, Mr. C. G. Talmage died on March 20th, nt
c., has, in the hands of the MM. Henry, at Knotts Green, Leyton. Mr. Talmage's first Paris, reached a stato of perfection that could apprenticeship to astronomy was served at Imrdly have been anticipated. We know that Greenwich. After holding several intermerlinte the photographic plate can be made to receive appointments he was selected as director of impressions from objects not visible to the eye Mr. Barclay's private Observatory at Leyton, with the same objective. As an instance of this which he held till his death. may be mentioned the liscovery of a new The Rev. Stephen H. Saxby, incumbent of nebula in the Pleiades, round Main, the exist. | All Saints', Clevetlon, died on August 5th, in his ence of which was never suspecter till revealed 56th year. Latterly Mr. Saxby had devoted his by photography. It has since been seen with entire leisure to the pursuit of astronomy, and the big telescopes at Pulkova and Nice. It was the author of many papers on astronomical ippears that it was also registered on a plate subjects and history,
In a paper in the Comptes Rendus Mr. Loewy' of the great excellence of the objective supplied proposes a new method for determining the by them to Dr. Struve. umont of astronomical refraction. The method The Lalande prize of the Académie des consists in placing before the object-glass of the
Sciences has been awardeal to M, Thollon for equatorial i prism with silvered faces forming his map of the Solar spectrum, and the Valz a double mirror, so that the images of two stars prize to Herr Spoerer for his thirty years' work widely separated--one, say, on the horizon, and on the physical constitution of the sun. the other near the zenith can be brought near The gold medal of the Royal Astronomical ingether in the focal plane of the telescope and Society was awarded to Professor Pritchard of their distance measured. After a certain in- Oxford, and Professor Pickering, U.S.A., for lerval, when the stars may be of nearly equal their photometric researches. distance from the zenith, and the difference of Dr. Robert Stawelly Ball, the Royal Astrorefraction between them a minimum, the dis. nomer for Ireland, received the honour of lance between the images can again be mea. knighthood on January 25th. sürell, and in this way M. Loewy thinks an A decree was issued in Japan in July last relaaccurate determination of the amount of the tive to time-reckoning, which declares that the atmospheric refraction may be easily deter meridian passing through the centre of the tran. mined.
sit-circle instrument at Greenwich shall be the initiul meridian for longitude, which is to be
| counted in two directions up to 180°, 1.e. east The Emperor of Russia has conferred upon and west; and, further, that on and after January Messrs. Alvau Clark & Sons the honorary 1st, 1888, the time on the meridian 135° east shall golden medal of the Empire, in acknowledgment ! be the stundard time throughout the Empire.
The Year's Tueather.
3151 OCTOBER, 1886. This summary of the weather experienced in hoped that the remarks on each month will be the British Islands during the year commencing useful for purposes of reference and comparison, Nurember 1st, 1885, and ending October 31st, especially when considered in relation to the 1886, has been mainly compiled from the data daily results of the Greenwich observations as contuned in the Daily and Weekly Weather Re- given for each month in the Almanack. ports issued by the Meteorological Office. It is
Vorember“, 1885. - The weather was mild, with | December. The weather was seasonable, the few frosty niyhts, and seasomble rainfall except rainfall small, and more than ordinary sunshine. in Scotland, where rain was much below the The highest temperature, 59°, was recorded at average quantity. The highest temperature, Sunburgh Headl and at Foynes on 16th; the 53; was recordel at Leith on 3rd; the lowest, lowest, 14°, at Penrith on uth. At 8 a.m. on 13, also at Leith on 18th. At 8 a.m. on 8th 9th the temperature was 42° at Malin Head, be temperature at Wick was 52", while at while it was only 22° at Parsonstown ; on uth, Oxforil it was only 37?.
Suburgh Headl 42°, York 20°; on 16th, Valencia At Roche's Point 1'25 inches of rain fell on 27th. 54', London 33°; on 28th, Belmullet 48°, DunAtmospheric pressure ranged between 30-45 geness 28°; on zoth Belmullet 46?, Yarmouth inches on 17th, and 28*7 on 27th. A thuler. 26°. From 5th to uth frost prevailed, with snow storm occurrell in Hampshire on sth. Stormy in Scotland. The rainfall in Ireland and Eng. bieterous weather prevailerl from 1st to gth, i land was less than half the or linary quantity. and 26th to 30:hı; brilliant weather from 15th to Atmospheric pressure ranged between 286 inches
ath. Ireland bad finer weather than usual on 4th and 30'55 on uth; from 8th to 27th it was wing to the south-easterly winds. Bright sun. high, with small fluctuations. Bright sunshine shine, estimater in percentage of its possible varied between 24 per cent. in the Channel Isles rloration, varied between 22 in north Ireland and and u in north Scotland, 10 in north-east England.
January, 1886.-Severe and rapid changes cha
racterized the weather; the mean temperature became exceedingly wet, dismal, and ungeninl, was low, and most of the nights frosty. The with strong winds. The highest temperature, highest temperature, 57°, was recoriled at Aber. 77°, was recorded at Bawtry on 7th; the lowest, deen on ist; the lowest, 69, at Rothampstearl on 29°, at Cirencester on sth. In Ireland the rain. Sth. At 8a.m.on 19th the temperature at Valencia fall was excessive; in England between roth and was 42°, while at York it was only 18°; on 23rd, 17th, heavy local falls caused the Severn and Aberdeen 40°, and Parsonstown 19". On 13th a other rivers to overflow. On 12th, 1'40 inches of severe thunderstorm with terrific wind occurred rain fell at Donaghadee, 1'45 at Barrow-in-Furin central England. Snow fell heavily at times, ness, 1'30nt Oxford, 1'04 at London ; on 13th 1-39 at but did not remain long. Between 4.30 11.m. and Loughborough; on 20th, 1'15 at Leith; on 24th 1.30 p.m., on 6th, eight inches of snow fell in 1'16 at London ; on 27th, 1'40 at Leith. On 12th London; and the minimum temperature at Kew snow fell in south Scotland and north England. was 13o. In Ireland and south-west England Severe hunderstorms occurred in London on i the rainfall was below the average; elsewhere 22nd and 23rd. Atmospheric pressure ranged slightly above. Cyclonic storms were frequent. between 30*5 inches on 5th and 29'2 on 18th. Atmospheric pressure ranged between 30'25 Bright sunshine varied between 41 per cent, in inches on 12th, and 29*75 on 31st. Bright sun the Channel Isles and 19 in north-east England. shine varied between 27 per cent, in east England June.-- The weather was cold and dry, except and 11 in north Scotland.
in north Scotland, where the rainfall was normal, February. The weather was generally cold, and in west Ireland, where the temperature was but although frosts occurred almost every night seasonable. The highest temperature, 79°, was they were not intense, The atmosphere was recorded at Cambridge on 29th; the lowest, 33°, quiet and the sky gloomy. Sunshine was almost at Hillington on 4th. The mean temperature absent in England. The highest temperature, was 4° below the average in England, 3° in Scot. 56°, was recorded at Killarney on 8th ; the lowest, land, 1° in Ireland. The week ending 21st was 14°, at Rothampstead on 15th. At 8 a.m. on very cold in England, while the air was from 15 7th the temperature at Valencia was 50', while to 20° warmer in the north of Norway, within the at Cambridge it was only 24°; and similar con Arctic Circle. On ist 1'os inches of rain fell at ditions continued three or four days. The rain. Spurn Head. On 10th, between 9 am, and noon, fall in Great Britain was very small; in Ireland there was intense darkness in London. On 14th it was seasonable. On 28th, 1'05 inches of rain a destructive tornado occurred at Deal. Atmos fellat Roche's Point. Snowfulls, snowdrifts, and spheric pressure ranged between 29'4 inches on fogs occurred in Great Britain, especially severe 15th and 30°3 on zoth. Bright sunshine varieel in the eastern parts, Atmospheric pressure between 52 per cent. in the Channel Isles and 27 ranged betiveen 28.85 inches on ist and 30°7 on in north Ireland. 8th, and was generally high. Bright sunshine July.---During the first ten days very little varied between 34 per cent. in north Scotland, rain fell, sunshine was remarkable for its intenand 14 in south England and west Scotland. sity and duration; the rest of the month was much At Kew the sunshine was 14 per cent., and the cooler, cloudy, changeable, rain frequent, and at mean temperature was lower for the month than times henvy. The highest temperature, 8go, was it has been for the past thirty years.
recorded at Southampton on 4th; the lowest, March.-The weather was cold, with frost, | 30°, at Wick on 2gth. Rainfall was excessive in much snow, and boisterous squally wins. The amount and frequency generally, nearly dlouble highest temperature, 65°, was recorded at Cain the average quantity in north Scotland. bridge on 24th; the lowest, 7°, at Stoke-on-Trent Sumburgh Hend 1.20 inches of rain fell on 13th ; on 7th. At 8 a.m. on ist the temperature at at Valencia 1'33 on moth; at Donaghadee ioi, at Scilly was 49°, while at Oxford it was only 29°; Oxford 1'81, at Cambridge 1'40, at York 2.20 on on 4th at Aberdeen 39°, at Parsonstown 20°; on 25th ; at Barrow-in-Furness 143, at Shields l'12 8th at Valencia 46°, at Loughborough 24°; on on 26th. Atmospheric pressure ranger between 17th at Scilly 40°, at Oxford 21°. The rainfall 30'4 inches on 3rd and 29'1 on 22nd. Thunder. was large in Ireland. Thunderstorms occurred storms occurred on 21st and 25th. Bright sunin England on 29th. On 26th, 1'29 inches of rain shine varied between 56 per cent, in the Channel fell at Barrow-in-Furness, and 1'27 at Holyhead. Isles and 26 in north Scotland. Atmospheric pressure ranged between 30'5 August.-- The weather was moist, cloudy, and inches on roth, and 29 on 31st. Bright sunshine showery, except the last week, which was clear, varied between 36 per cent, in the Channel Isles dry, and hot, especially in England. The higbest and 17 in north Ireland.
temperature, 870, was recorded at London on April. The weather was partly severe and 30th; the lowest, 30°, at Wick on 4th. At Palen. partly very fine. The mean temperature was ciu, i 16 inches of rain fell on 12th, and at Cam. zo below the average in south England. The bridge 1'23 on 17th. Atmospheric pressure ranged highest temperature, 71°, was recorded at Here between 29'3 inches on 13th and zo'z on xoth. ford on 24th ; the lowest, 23°, at Nairn on 2nd. Thunderstorms occurred in England on 13th At 8 n.m, on 27th the temperature at Aberdeen | and 18th. There were no easterly winds. Mist was 60°, while at Sumburgh Head it was only and fog were freqnently reported from stations 36° ; Jersey was 59°, York 39". On 6th, 1'oz inches in south-west England and around the Irish of rain fellat Valencia. Thunderstorms occurred Sea. The sky was almost continuously overcast in England on oth and 24th. On uth four or in Ireland. Bright sunshine varied between 49 five inches of snow covered Worcestershire. On per cent, in the Channel Isles and 22 in north 29th considerable snow fell in north Wales and Ireland. north Scotland. Atmospheric pressure ranged September.-The weather was exceedingly fine. between 28.6 inches on 8th and 30'45 on 15th. The highest temperature, 85°, was recorded at Bright sunshine varied between 46 per cent. in London on ist; the lowest, 289, at Newton Reignson the Channel Isles, and 31 in north-cast England; 17th. The rainfall was only about half the avera ve 74 was registererl at Kew on ist.
quantity in England. On and i'20 inches of run May.-- After a few bright days the wenther fell at Hurst Castle; on 9th, 1'64 at Burrow-in.
The Year's Weather— Variable Star Algol-Celestial Olojects, d'c. 483 Furness; on 12th, 1'08 at Roche's Point ; on 13th, and deficient in the north. On zrel, 1'04 inch of 1'12 at Nairo. Thunderstorns occurred on 2nil, rain fell at Valencia ; on 12th, 1'56 at Barrow-in. ini, and 4th in south-east Englanil. A gule on Furness ; on 15th, 1'10 at Mullaghimore, 174 at gth was most severe on the west and north-west Belmullet, 1'37 at Parsonstown, i'oo at Pemciasts. Atmospheric pressure ranged between broke; on róth, 1'23 at Stornoway; on 20th, o'99 29-15 inches on oth anii 30'6 on 16th, Bright, at Cambridge. Atmospheric pressure ranged sunshine variert between 47 per cent. in the between 28'5 inches on 16th, and 30-5 on 25th. Channel Isles and 25 in north-east England. Thunderstorms occurred on 6th, ioth, 19th, 20th,
October. The weather was very mild gene- and 21st. A tempest of extraorulinary severity rally. The highest tenperature, 80°, was re- and destructiveness prevailed on 15th to 17th onlel at Cambridge on 4th; the lowest, 299, at inclusive, embracing the whole of these islands. Brukeborough on 22nd. The first part of the Bright sunshine varied between 35 per cent. in month was very fine, (ry, and exceptionally north Scotland and the Channel Isles, and 17 in Faru, especially in south and south-east Eng. east Scotland. land. Rain was over-abundant in the south!
The Variable Star Algol (Beta Persei). This is one of the most noteworthy variable | 4th mag. It continues at this minimum about stars in the heavens: its magnitude oscillates 15 minutes, when it suddenly acquires greater between 2-3 anil 4's, and its period is zd. 20h. brilliancy, and in 34 hours assumes its ordli. 48. 5478.
The star is commonly a little nary magnitule. T'he following are the times fainer than and mag., and remains so for 1 of minima in 1887. Between April and July the !134h., when it rapidly declines in lustre, star is not favourably visible, being immersed
and within some 32 hours becomes less than in the twilight low on the northern horizon :-
Summary of Celestial Objects and Phenomena for Observation, 1887.
Is compiling a statement of the more im. March 2, July 17, and October 7, and the times portant astronomical events which may be are specified in another part of this Almanack. €]ected in 1887, we refer only to such phe. On October 13 the bright star, Regulus, or
can as may be definitely predicted. There Alpha Leonis, will be similarly obscured, and are many attractive objects' for observation other dates furnish analogons phenomena in during every year which are not capable of reference to minor stars. A telescope is requisite alls exactly precomputer and annouceil. in witnessing them, and the observer will pro. This relates to certain comets and meteor bably be surpriser at the sullenness with which storers, to the outburst of temporary stars the stars disappear on coming up to the Moon's such as that which occuured in the great nebula limb). In the case of bright stars they may be
ladruneia during the latter part of August, traced with the nakerl eye mutil close to the 1835; to displays of Aurora Borealis; to isolated murgin of our sutellite, ihen, however, they farze meteors, called fireballs, and other phe. become overpowered by the glure, and a glass
ena of diversitical character, which are must be brought into use in order to observe the 453
attractive snbjects for observers. actual disappearances : Thuugh occurrences of this nature are to a Plunets. Mercury may be observed under ertain extent erratic, there are many others, favourable circumstances at the end of February regulated by conrlitions which are now so well and during the first week in March. The planet naterstool that the times of their apparition will be shining brighter than a star of the first may be currectly assignel, and it is chietly to magnitude, and twinkling perceptibly amid the thes we wish to direct attention.
vapourscirculating nearthe horizon. The intendOceritations. -The temporary hiding of bright ing observer shouki look towards the western dars hy the moon affordds extremely interesting horizon about an hour or more after sunset, and views for small telescopes. During 1887 there there is every probability he may succeed in will be several occultations of this class that detecting this object. At the end of June
the well observer. The first magnitude 'Mercury again emerges into view as an evening tar, Alean, or Alpha Tari, will be occulted stur. For a week or so at the middle of August, of 19 less than four occasions, viz., Jan, 7and again ai the beginning of December, the