Investigation of the Pollution and Sanitary Conditions of the Potomac Watershed: With Special Reference to Self Purification and the Sanitary Condition of Shellfish in the Lower Potomac River |
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agar agar count Alexandria algæ amount Anacostia River average bacteria bacteriological Bridge canal cent greater coli Colonial Beach contamination Cumberland diatoms discharged dissolved oxygen ebb tide eel grass endo feet float started flood tide Foote Fort Foote Fort Washington gallons gelatin Giesboro Point Harpers Ferry Hygienic Laboratory Bulletin Indianhead Lactose bile Lactose broth Lower Cedar Point lower river lowest group Marshall Hall Maryland Maryland Point Maryland side mile an hour minutes mouth North Branch Number of samples observations organisms overcast oysters plankton pollution Popes Creek population Possum Point Potomac River public water supply purification river channel river water Rotifer samples taken samples were taken sanitary sewage sewerage system Shenandoah showed spring square miles stations stream flow submerged plants Sunshine TABLE Three Sisters tion town tubes tubificid turbidity typhoid fever Virginia side Washington sewer outlet wastes watershed Whitestone Point
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Page 191 - ... the lowest showing no gas, Endo plates were then inoculated for confirmatory tests. Samples of the water from over the oyster beds were taken at the same time as the oysters and analyzed in the manner previously described. The water used for dilution purposes in the examination of oysters contained 1 per cent of sodium chloride in order to approximate the natural salinity of the oyster liquor. In addition to this, however, a number of parallel dilutions in distilled water were plated for comparison....
Page 11 - The Surgeon General of the Public Health Service, with the approval of the Secretary of the Treasury...
Page 232 - No. 26. — On the stability of the oxidases and their conduct toward various reagents. The conduct of phenolphthalein in the animal organism. A test for saccharin, and a simple method of distinguishing between cumarin and vanillin.
Page 234 - Digest of comments on the Pharmacopoeia of the United States of America (eighth decennial revision) and the National Formulary (third edition) for the calendar year ending December 31, 1906.
Page 234 - No. 57. — I. The presence of tubercle bacilli in the circulating blood in clinical and experimental tuberculosis.
Page 236 - B dioxy-B-methyl butane. By GA Menge. 4. The detection of white phosphorus in matches. By Earle B. Phelps. 5. The chemical composition of rubber in nursing nipples and in some rubber toys. By Earle B. Phelps and Albert F. Stevenson. 6. The analysis of thymol capsules. By Atherton Seidell. 7. Seasonal variation in the composition of the thyroid gland. By Atherton Seidell and Frederic Fenger. 8. Note on a new apparatus for use with the Winkler method for dissolved oxygen in water. By Hyman L. Shoub....
Page 102 - This effect has been very strikingly shown in the report of the International Joint Commission on the Pollution of Boundary Waters, where large areas of lake water have been polluted locally and most of the B.
Page 232 - A stomach lesion in guinea pigs caused by diphtheria toxine and its bearing upon experimental gastric ulcer. By MJ Rosenau and John F. Anderson. No. 33. — Studies in experimental alcoholism. By Reid Hunt.
Page 232 - McClintic. *No. 23. — Changes in the Pharmacopoeia, of the United States of America. Eighth Decennial Revision.
Page 233 - No. 2 on the origin and prevalence of typhoid fever in the District of Columbia, 1907. By MJ Rosenau, LL Lumsden, and Joseph H.