Bacteria! Species in Normal Fore Milk. 



-With this animal it is to be noted that No. 

 31, a lactic acid forming micrococcus, is constant to all dates, 

 and upon each date was found present in teat No. 2. 



Other germs found twice each were Nos. 45, 53 and 56 ; but 

 each time in a different teat. 



Cow No. 26 



Species present, per teat, by dates. 



Teats = 



No. 1 



No. 2 



No. 3 



No. 4 



Expr. No. 7, July 1st. 

 Expr. No. 17, July 17th. 



Expr. No. 14, July 23rd. 



33,1 



66, 100, 67 

 17 and 33 



33 

 33, 15 



67,33 



39, 61, 67 

 33 



17,44,33 

 53,77 



(Lost) 



In these three milkings from cow No. 26, the common spe- 

 cies to each date are seen to be Nos. 33 and 67. Out of eleven 

 milk samples taken No. 33 occurs in the cultures nine times. 

 The intervening dates being 16, 6 and 22 days apart. No. 33 is 

 a streptococcus and in these distant tests, as to time separation, 

 is a strong argument of constancy of presence being possible to 

 an individual species. In growth characteristics this germ is 

 almost a strict anaerobe. 



Studying these tables, we find for each animal the following 

 numbered germs present : 



Cow No. 24— Nos. 1, 5, 6, 9, 10, 100, 77, 15, 16, 17, 20, 23, 

 61, 26, 27,.29, 30, 31, 58, 53, 66, 96, 93, 94, 97, 11 and 67, a total 

 of twenty-seven distinct forms. 



Cow No. 21.— Nos. 45, 31, 27, 20, 50, 29, 53, 55, 56, 57 and 51, 

 a total of eleven. 



Cow No. 26.— Nos. 33, 1, 39, 61, 67, 17, 44, 66, 100, 15, 53 and 

 77, a total of twelve. 



The forms common to three animals equal only one, No. 53, 

 while those common to two of them are seen to be Nos. 1, 100, 

 77, 15, 61, 29, 31, 66, 67, 29 and 20 ; eleven constant forms. 



General Annotations: — From these summaries it is to be 

 noted that cow No. 24 from nine different milkings furnished 

 twenty-seven of the thirty seven germs of the three tests, cow 



