Infant-feeding in its relation to health and disease, by Louis Fischer; containing 54 illustrations, with 24 charts and tables, mostly original . formly larger, its ends are not so sharplyrounded, and in all culture-media long, thick filamentsare seen, and many of the bacilli have the protoplasmgathered in the centre, leaving the poles clear. There is 54 INFANT-FEEDING. some difference in their colony growth on gelatin, and ingelatin stick cultures bacillus b does not show the nail-form growth with marked end-swelling in the depth. Inpotato cultures the bacillus lactis aerogenes shows a differ
Infant-feeding in its relation to health and disease, by Louis Fischer; containing 54 illustrations, with 24 charts and tables, mostly original . formly larger, its ends are not so sharplyrounded, and in all culture-media long, thick filamentsare seen, and many of the bacilli have the protoplasmgathered in the centre, leaving the poles clear. There is 54 INFANT-FEEDING. some difference in their colony growth on gelatin, and ingelatin stick cultures bacillus b does not show the nail-form growth with marked end-swelling in the depth. Inpotato cultures the bacillus lactis aerogenes shows a differ-ence between old and new potatoes, while bacillus b doesnot show any difference. Bacillus b possesses decided pathogenic properties,which were shown both by hypodermic injections andfeeding with milk cultures. CHAPTER IX. COLOSTRUM. Colostrum is found in the breast of a woman severalhours after birth. It resembles milk, but is a muchthinner fluid. It is always the forerunner of a healthynormal secretion of breast-milk, which usually appearson the third day after the birth of the infant. Colostrum is the earliest milk, very thin and watery. Colostrum-corpuscles Fig. 11.—From a Drop of Milk on the Third Day after Deliv-ery, kindly Furnished by Dr. H. L. Collyer, showing Co-lostrum-corpuscles. The specimen drawn by Dr. Julian (Zeiss Ocular 4, dd Lens.) in color, very rich in salts, with decided purgative prop-erties, saving all useless castor-oil, honey, and butter andall sugar-water, with which mothers and nurses delightto experiment. According to Baginsky, colostrum contains largequantities of serum-albumin, is also very rich in fat andcolostrum-corpuscles, and contains a large quantity of (55) 56 INFANT-FEEDING. salts. The last two ingredients are supposed to be thecause of the laxative action of the colostrum. Immunity by Breast-milk. It is a well-known fact, and one that has been broughtout most prominently by Brieger and Ehrlich and Bagin-sky, that immunity ca
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