. The Alumni journal. College of Pharmacy of the City of New York; Pharmacology. PUBLISHED BY THE ALUMNI ASSOCIATION OF THE COLLEGE OF PHARMACY OF THE CITY OF NEW YORK. Vol. I. New York, November, 1894. No. 7. A niCROSCOPICAL AND CHEMICAL EXAHINATION OF CLOVES.* M By henry KRAEMER. ORE than ayear ago, a sample of a filter paper and extracted in a Soxhlet Li NE BO' Oi spice was submitted to the author, an examination of which revealed the presence of a large quantity of starch. The question was then asked: "How much is there of this adulteration ? " A quantitative answer was desired w
. The Alumni journal. College of Pharmacy of the City of New York; Pharmacology. PUBLISHED BY THE ALUMNI ASSOCIATION OF THE COLLEGE OF PHARMACY OF THE CITY OF NEW YORK. Vol. I. New York, November, 1894. No. 7. A niCROSCOPICAL AND CHEMICAL EXAHINATION OF CLOVES.* M By henry KRAEMER. ORE than ayear ago, a sample of a filter paper and extracted in a Soxhlet Li NE BO' Oi spice was submitted to the author, an examination of which revealed the presence of a large quantity of starch. The question was then asked: "How much is there of this adulteration ? " A quantitative answer was desired without a chemical analysis. This was the begin- apparatus by means of petrolic ether. Some of the ether was recovered, and the remainder was siphoned off by means of a siphon and a suction of air. The oil thus obtained had a viscous appearance, and on the addition of alcohol about per cent, of a white resinous compound ning of the present work, and very natur- separated, which on the filter assumed ally the thought arose. Isit possible to ob- the form of a very fine gauze. To this tain quantitative as well as qualitative filtered solution from 8 to 10 alcoholic results with the microscope? The results potash solution (i ^ KOH) are embodied in this paper—which is in- tended, however, merely as a preliminary paper—on the comparison of quantitative microscopical with chemical examina- tions, and it is hoped will reveal the possibilities of research in this direction. At the same time are given the results of were added. The alcohol was removed on a water-bath, and to the nearly dried mass from 2 to 2^ of benzoyl chlo- ride were added. The mixture, in a flask similar to that in which the extraction had been done, was stirred with a glass rod until the reaction was complete. analysis of some commercial samples of Water containing some KOH was then clove oil and cloves by Thoms' method added, and the whole heated on a water (with perhaps a slight modifi
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