666 SPECIAL HISTOLOGY. 



was unable to perceive any fat-containing cells. But since V. Bueren, 

 especially, has found such cells, and consequently the formation of the 

 milk and of the colostrum, seem to be morphologically quite identical, 

 such a separation of the two processes can no longer be defended ; and, 

 in cases of repeated parturition, the formation of colostrum can scarcely 

 be viewed in any other light than as the introduction to that of the 

 milk. On the other hand, I am quite of opinion, that the production 

 of the jfirst colostrum is connected with the excessive development of 

 the lacteal gland coincident with the first pregnancy ; and that it is 

 in part derived from the internal cells of the originally solid rudiments 

 which are removed, during the formation of the ultimate terminations 

 of the gland. I explain, in a similar way, the formation of milk in 

 the new-born child ; in which case, surely, no true secretion can be 

 thoucfht of. 



Donne, the discoverer of the colostrum-corpuscles, states, that in 

 inflammations and tumefactions of the breast of nursing women, the 

 milk acquires the nature of colostrum ; which is, however, denied by 

 D'Outrepont and Munz (" Neue Zeitschrift f ur Geburtskunde," Bd. 

 10); in the same way, according to Lehmann (" Phys. Chemie," II., 

 327, [transl. II., p. 334]) it would appear, that, in acute diseases 

 generally, and also in menstruation (Donnd, d'Outrepont), the milk 

 exhibits colostrum-corpuscles, which, when tliey exist in larger quan- 

 tity, are regarded by Donnd as indicative of bad milk. In hoof-mur- 

 rain" (" Klauenseuche"), Herberger and Donnd found the milk to 

 contain a good deal of colostrum. In sour milk the casein coagulates 

 into granules, and the milk-globules gradually run together into larger 

 drops. Blue and yellow milk, according to Fuchs (vide Scherer, art. 

 "Milk," in " Handw. d. Phys.," II., p. 470) contains colorless infuso- 

 ria, which he terms vibrio cyanogenus and xantJiogenus, which, Avhen 

 transferred to healthy milk, also color it ; a fact which, as regards blue 

 milk, is confirmed by Lehman (1. c, p. 335, Eng. transl.) ; according 

 to Bailleul (" Comptes rend.," t. 17, p. 1138), however, and Lehmann 

 [once only], a filamentary fungus is also found in that sort of milk. 

 Med milk has also been noticed by C. Nageli, and vegetable protococcus- 

 like growths found in it. 



For the investigation of the mammary glands, those of pregnant or 

 nursing women, or of women who have borne children, should be pre- 

 ferably selected, because it is only in such that the gland-vesicles are 

 well developed. When the smallest lobules are teased out, their ele- 

 ments come readily into view; but if it be desired to examine into their 

 arrangement, fine sections of glands boiled in acetic acid and dried are 

 above all to be recommended, as well as injected preparations, which it 

 is not difficult to make from the lacteal sinuses. For the study of the 

 development of the gland, besides recent specimens, preparations made 



