. American chemical journal . Products Antitoxin Behring Tuberculin Kooh Photographic Chemicals Sole Agents for the United States and Canada New York, N. Y. _ Charlotte, N. C. Beaton, Hass. LabOratONeS Atlanta, Qa. Philadelphia, Pa. > San Francisco, Cal. Providence NEWARK, N. J. Hontreal. Chicago, ill. Toronto, Canada -FOUNDED 1818- POWERS-WEIGHTMAN-ROSENGARTEN CO. NEW YORK PHILADELPHIA ST. LOUIS Technical C H E M I C A LS Medicinal COMPLETE LIST ON APPLICATION Oxone Be independent and make your own Oxygen. Oxone makes itupon contact with water, and makes it ioo% pu
. American chemical journal . Products Antitoxin Behring Tuberculin Kooh Photographic Chemicals Sole Agents for the United States and Canada New York, N. Y. _ Charlotte, N. C. Beaton, Hass. LabOratONeS Atlanta, Qa. Philadelphia, Pa. > San Francisco, Cal. Providence NEWARK, N. J. Hontreal. Chicago, ill. Toronto, Canada -FOUNDED 1818- POWERS-WEIGHTMAN-ROSENGARTEN CO. NEW YORK PHILADELPHIA ST. LOUIS Technical C H E M I C A LS Medicinal COMPLETE LIST ON APPLICATION Oxone Be independent and make your own Oxygen. Oxone makes itupon contact with water, and makes it ioo% pure. The Roessler & Hasslacher Chemical Co., 100 Williani St., New York. CHRISTIAN BECKER Formerly of, and Snccctsor (•BECKER & SONS AND BECKER BROS. Mannlaclurer el Balances and Weights ofPrecision. For Assayers,Chemists, and forall purposes whereaccuracy is requir-ed. Price Ivist andCatalogue sent onapplication. No. 6 A Balance Factory: 3 to 11 Davenport Ave., NEW ROCHELLE, N. York Office: 7 Maiden «.w»^ O .-^-^ J ^- f WILEYS Principles and Practice o!INOVV XX-Caay • Agricultural Analysis. VOLUME 2. Fertilizers and Insecticides By HARVEY W. WILEY. , Chief Chemist, U. S. Dept. of Agriculture, Washington, D. C. Will be Sent Post-paid, upon Receipt of Price, $ The Chemical Publishing Co., Easton, Pa. General Indexes to Volumes I to X (price $)and XI to XX (price $) of the American Chemi»cal Journal can still be supplied. Orders should beaddressed to THE JOHNS HOPKINS PRESSBALTIMORE. MD. Photographic Map of the Normal Solar Spectrum Made byProfessor H. A. Rowland This series of photographs of the solar spectrum has been made in thePhysical Laboratory of the Johns Hopkins University. Several concavegratings, of 6 inches diameter and 21^ feet radius, having 10,000 or 20,000lines to the inch, were used for the purpose. a from wave length 3000 to 3330 I f from wave length 4850 to 5350 b 3270 to 3730 g 5250 to 5750 c 3670 to 4130 I h 5650 t
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Keywords: ., bookcentury1800, bookdecade1870, bookidamericanchem, bookyear1879
