ISBN: 1154411303

[EAN: 9781154411300], Neubuch, AMERICAN MEDICAL UNION,SUBJECTS, This item is printed on demand. Paperback. This historic book may have numerous typos and missing text. Purchasers can usua… Plus…

[EAN: 9781154411300], Neubuch, AMERICAN MEDICAL UNION,SUBJECTS, This item is printed on demand. Paperback. This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: . . . is more readily and freely absorbed by the skin than ordinary fats, its absorption into the system is less free than the latter, and from Monksf experiments in the Pharmacological Institute at Berlin, it would appear that it is not absorbed by the intestinal tract at all. To some degree this is due to the fact that lanolin only begins to melt at 122 F. and does not become entirely liquid under 132 F. , while physiological experiments show that absorbable fats melt at or below 123 F. The exceedingly free absorption by the skin of a fat which does not become liquid under about thirty degrees higher temperature than that of the normal is only explained by the fact that it (wool fat) is derived from horny tissue, and therefore is readily taken into the epidermis and gland follicles as a natural constituent or nutrient. When medicated with aqueous solutions, it is probable that absorption not only into but beyond the skin, into the system, is greater than with any other base, from the larger amount of water carried and from the readiness with which it is yielded up. For the introduction of medicine generally into the system through the skin, other ointment bases are to be preferred to lanolin; indeed, the experiments of Guttmann prove this, though Liebriech denies that this is true of the later preparations of purified lanolin, which he claims are free from unfusable cholesterine ethers. The later importations of lanolin are nearly white in color, of rather tenacious consistence and for medicinal use contain about 30 per cent of water. I believe, however, that anhydrous lanolin can be obtained and also compounded with other substances. In this country purified wool fat is made by Messrs. Theo. Metcalf and Co. , of Boston, under the name of. . . This item ships from La Vergne,TN., [PU: General Books, LLC]<