GERMS IN RELATION TO MILK 



4i 



TABLE II. (b) 



SOURCES OF BACTERIA THAT GET IXTO MILK* 

 Numbers in this table refer to varieties of bacteria in Table I. 



COW. 



Inside of Udder. 



( Surface of Cow. 



Air. 



Flies. 

 <July, Aug., Sept.) 



Milker. 



Milk Utensils. 



j Largely spherical forms, developing very blo-.viy la milk, 

 ] M, 15. '6- 



Slightly acid forms, 3. 

 I In some cases pathogenic forms, 7, ( 8, 9).f 



Feces, 1, 2, 4, 5, 6, 8, 14, 15, 16. 



Hay dust 2, 3, 4, 5™ 7, 8, 14,15,16. (No. 1 found in 



only one sample.) 

 Grain feeds, ., 2, 3, 4, 5, 6, 7, 8, 10, 14, 15, 16. 

 Soil dust, 3, 4, 5, 6, 14, 15, 16. 

 Air distributed germs from any source, 

 [indigenous on skin of cow, 1 (?), 7 (?). 



f Hay dust, grain feed dust, soil dust, same as above. 

 •< Medium of distribution for bacteria from all sources. 

 Bedding furnishes one of the largest sources. 



I 



( i, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16. 



1 Intestinal disease germs carried by flies. 



f4 f 5, 6, 7, 8, 9, 10, 11, 12, 13 , 14, 15, 16. 



-j Hands, clothes, face, hair. 



I The largest source of disease germs. 



f 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16. 



Water, dust, unsterile cloths or brushes, milk left in seams, 

 "j crevices or in rusty places. 

 Thoroughly sterilized utensils do not furnish any bacteria, 

 in milk. 



(b) Taken from Bull. 51, Storrs Exper. Sta. 



* Bacteria injurious to milk and disease germs for man are indicated by heavy-faced type. Disease germs 

 for man are indicated by heavy-faced type and underscored line. 



+ Bacteria (streptococci) in the milk from an inflamed cow's udder (mastitis or garget) may cause severe 

 sore throat in a person drinking it, but not true diphtheria.— Author. 



