American journal of pharmacy . a strong screwthread. The sample is allowed to remain in the press under pressurefor fifteen minutes, at the end of which time it is carefully removedand the pressed cake weighed, any camphor adhering to the lintbeing carefully brushed off and added to the cake. From the lossin weight the amount of water plus oil expressed is found. The moisture is then estimated on the pressed cake, and from thedifference between the result and the original moisture the amountof water expressed is found, and, by difference, the amount of oilin the expressed liquid is found. It i
American journal of pharmacy . a strong screwthread. The sample is allowed to remain in the press under pressurefor fifteen minutes, at the end of which time it is carefully removedand the pressed cake weighed, any camphor adhering to the lintbeing carefully brushed off and added to the cake. From the lossin weight the amount of water plus oil expressed is found. The moisture is then estimated on the pressed cake, and from thedifference between the result and the original moisture the amountof water expressed is found, and, by difference, the amount of oilin the expressed liquid is found. It is then assumed that the water still remaining in the pressedcake is associated with as much oil as that in the expressed liquid,and the total oil calculated on that basis. The accuracy of thisassumption may be open to question, but, with a good press, verylittle moisture remains in the cake, while the m. p. of the pressedcamphor usually indicates a fairly high degree of purity. Government Laboratory,Hongkong. THE AMERICAN JOUR. OF PHARMACY COMPKBH-ENSIVE PHARMACEUTICAI. RESEARCH. One of the great lessons taught by the world war was the de-pendence of the industries upon the sciences. The tide of battlewas swayed by the preponderance of scientific knowledge and itsskillful application to the destruction of life and property. Thedestiny of nations was jeopardized and wavered in the balanceuntil this advantage of the enemy became fully recognized andwith feverish haste the latent resources, the inventive ingenuity andscientific knowledge of the allies, were mobilized into coordinatedresearch. The National Research Council was hastily organized in 1916for the purpose of stimulating and coordinating research necessitatedby the war problems and for a period this had the financial supportof the National Government. In 1918, by executive order of thePresident of the United States, it was reorganized as a permanentbody and the secretary now states that its essential purpose isthe promot
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Keywords: ., bookcentury1800, bookidamerica, booksubjectpharmacy, bookyear1835
