Bulletin (12; V. 16; V. 19; V. 24; V. 28; V. 31; V. 35; V. 38; V. 43) (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1886 Excerpt: ...above the level of the liquid in the flasks when they were placed in it. The number of flasks put in was, in the first case, 6, and in the second, 4. The time required for the liquid.in the flasks to reach the temperature of 65u was ten minutes. The flasks used wero Erlenmeyer, of about 300 cc. capacity. Taulf. I.--Ilettiilt of comparison of methods on total and insoluble phosphoric acid. (13) University of Arizona.--Reported by Mr. Collingwood; G. J. A. Heborly, analyst. Total P;Os, determined by Mg(NOa).: . (14)-Veto Jersey Agricultural College Experiment Station.--Reported by Mr. C. S. Cathcart, New Brunswick, N. J. Moisture determined at 100 in an air bath. Great care was used to keep the temperature at 100. (15) Ohio Experiment Station, F. J. Falkenbach, acting chemist, Columbus, Ohio.--Total phosphoric acid by Mg(NO: j)2. Moisture determined in an air bath at 100. (16) Massachusetts State Experiment Station.--Reported by Dr. C. A. Goessmann; analyst, R. 11. Moore. Comparison of results of different methods on total phosphoric acid. All tests were made according to official methods. The digestion with ammonium citrate was conducted in a rectangular popper water bath, 10 by 8 by 6 inches. About 4.5 liters of water were put in the bath. Two 8-onncc Florence flasks wero used at once. On the introduction of the flasks the water in the bath sunk about 1.5, but came again to 65 in about two minutes, The contents of the flask came to 65 in less than two and one-half minutes. Washing on the filter was with water at about 65. De Roode's method was followed out as though no nitrates were present. In No. 1 this method failed repeatedly to give results like those obtained by the other methods." Mr. W. J. Williams, chemist for the Walton f-Whann Company, Wilming...