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amount analysis angle appear Arisaig atoll augite axis Beds calcite carbonate cavity cent chemical chert coal composition compound coral cordierite Cretaceous cristobalite crystalline crystals curves Cuttingsville cylinder deposits described determined diameter dikes dolomite equations eruptive essexite etch evidence experiments fauna feet feldspar figures formation fossils Funafuti Geol Geological Glass Granite Hill Hermit trail hornblende hypophosphoric acid ilvaite indicate iodine limestone lines lower marine method MgO.SiO mineral Moraine Moss Creek nordmarkite observed obtained occurs origin oxalate oxidation Patagonian phase phosphorous acid plane plate porphyry precipitate present pressure prism probably pulaskite quartz Redwall reef region rhombohedron Roca rock San Jorge sand sandstones sediments shales silica Silurian Sixmile Creek sodium solution spark species specimen spinel strata Supai surface syenite Table temperature ternary Tertiary thick thorium thorium nitrate tion tube Upper valley West Sixmile zone
Page 366 - PRINCIPLES OF ZOOLOGY; Touching the Structure, Development, Distribution, and Natural Arrangement, of the RACES OF ANIMALS, living and extinct, with numerous Illustrations. For the use of Schools and Colleges.
Page 177 - The public surveys shall extend over all mineral lands ; and all subdividing of surveyed lands into lots less than one hundred and sixty acres may be done by county and local surveyors at the expense of claimants ; but nothing in this section contained shall require the survey of waste or useless lands.
Page 96 - WILL, while we have no knowledge of any other primary cause of force, it does not seem an improbable conclusion that all force may be will-force ; and thus, that the whole universe is not merely dependent on, but actually is, the WILL of higher intelligences or of one Supreme Intelligence.
Page 118 - ... this whole mass converted by earthquake pulsations of the breadth which such undulations have, into a series of stupendous and rapid-moving waves of translation, helped on by the still more rapid flexures of the floor over which they move, and then advert to the shattering...
Page 308 - I was however much surprised to see the needle suddenly deflected from a state of rest to about 20° to the east, or in a contrary direction when the battery was withdrawn from the acid, and again deflected to the west when it was re-immersed.
Page 118 - ... power of the tremendous jar of the earthquake, we shall have an agent adequate in every way to produce the results we see, to float the northern ice from its moorings, to rip off, assisted with its aid, the outcrops of the hardest strata, to grind up and strew wide their fragments, to scour down the whole rocky floor, and, gathering energy with resistance, to sweep up the slopes and over the highest mountains.
Page 111 - We may consider the level of the sea to be a grand base level, below which the dry lands cannot be eroded; but we may also have, for local and temporary purposes, other base levels of erosion, which are the levels of the beds of the principal streams which carry away the products of erosion.
Page 113 - ... the vallies between them ; their entire difference, in many cases, from the rocks in the country where they lie — • rounded masses and pebbles of primitive rocks being deposited in secondary and alluvial regions, and vice versa; these and a multitude of similar facts have ever struck us as being among the most interesting of geological occurrences, and as being very inadequately accounted for by existing theories."* At a later date Silliman published a letter signed