. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. GLANDULAR SECRETIONS. 91 carried off in the respiratory process, to assist in the calorifying func- tion. The bile, therefore, seems to be partly excrementitial, partly recrementitial. The sources of the bile may be found in the disintegration of the fibrinous and nervous tissues when the amount of food is just suf- ficient to supply the waste of the system, the liver removing such products as are rich in carbon and
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. GLANDULAR SECRETIONS. 91 carried off in the respiratory process, to assist in the calorifying func- tion. The bile, therefore, seems to be partly excrementitial, partly recrementitial. The sources of the bile may be found in the disintegration of the fibrinous and nervous tissues when the amount of food is just suf- ficient to supply the waste of the system, the liver removing such products as are rich in carbon and hydrogen ; and in any excess in the non-azotised compounds derived from the food, beyond the amount that is requisite for the supply of the respiratory process, or that can be deposited as fat. In this elimination of hydro-carbon the liver is subsidiary to the lungs. In the foetus it is the great decar- bonizing agent. In regard to the kind of blood from which the bile is secreted, analogy would point to the hepatic artery, although the experiments of Kiernan seem to fix it upon that of the vena porlse. Both have their supporters. Those who embrace the supposition of the secre- tion from the hepatic artery^ assign to the vena portse the office of mixing thoroughly with the blood heterogeneous substances absorbed from the stomach and intestines, before transmitting them to the heart. Those who contend for the secretion from the vena portae assign to the hepatic artery the office of nourishing the liver, which from its small size, in comparison with the vena portse, seems more justly to be its function. Secretion of urine.—This secretion is purely excrementitial, being destined to removed certain effete substances from the blood, whose retention would be positively injurious. As it is the function of the liver to remove the superfluous carbon, so it is of the kidney to get rid of the excess of nitrogen in the blood. The kidney is a tubular gland, being formed of uriniferous tub
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