The rate of fat absorption has generally been measured either directly by determining the amount of lipide remaining in the alimentary tract after feeding fat, or indirectly by following the appearance of fat in the blood stream. The latter measurement is known to be influenced by factors other than the actual absorption of fat, such as the rate of removal of the lipides from the blood. This ra...

ALTHOUGH the importance of Fe in respiratory processes has been recognized for a long period, there are still gaps in our knowledge of the many processes in which this element is involved, e.g. very little is known concerning the absorption of Fe from the alimentary tract. The work to be described is concerned with this problem. The Wisconsin workers [Hart et al. 1928; Elvehjem, 1932] have prod...

ever, certain adjuvants, e.g. para-aminosalicylic acid, may delay the development of drug-resistance. Streptomycin is not absorbed from the alimentary tract and, therefore, it must always be given intramuscularly as well as directly, where possible, into the spaces which it is desired to render free from bacteria. The drug is excreted by the kidney. After intramuscular injection an adequate blo...