a a 


MILK AFFECTED BY DAIRY PRACTICES. 83 
into flasks, all possible precautions being taken to avoid con- 
tamination from external sources. ‘The entire milk of the cow 
thus obtained was carefully sampled and plate cultures made to 
determine the numbers of bacteria present. On some days the 
udder was milked as dry as possible, while on other days a 
small amount of strippings was left in the udder. ‘The method 
of milking as given in the table indicates the treatment at the 
milking preceding the one at which the sample was taken. For 
example, ‘‘milked dry’’ on the p. m. of June 3d means that 
the cow was stripped as dry as possible the morning of June 
3d, while “‘not milked dry’”’ the morning of June 8th means: 
that a small amount of puDRIDES was left in the udder the night 
of June 7th. 
It was found as a result of this method of work that in the 
majority of cases the germ content of the milk was larger when 




TABLE 26, 
Bacterial content of milk affected by method of milking at previous - 
muking . 
goo He oo 
NUMBER OF EXPERIMENT. Dates eee 34 i one 
| ye | ace t= 
{ 7+ = 
ie - : June 3] Milked dry 137c25 -~ 
b, : = é June 4 | Not milked dry | 22,604 8,779 
2, a 4 : June 8 | Milked dry | 6,865 —- 
om 2 * - Jane 88. 2Notmilked dry | 17,607.) 10,742 
ee : - - June 9 | Milked dry P3579 ae 
2a 2 3 = June 10 | Not milked dry 2,346 989 
A, : : s June 1r | Milked dry | 4,800; — 
7 : = - HunenrOwte NOt milked: dry 2) 212,112 eG le 
5, - - ; June 21 | Milked dry 3,129 —- 
5, 3 a = june 2teieNot milked dry iu135 390 "|.10;261 
6, s : : June 22 | Milked dry / 21,601 — 
6, a : June 22 | Not milked dry | 32,296 | 10,605 
oi f f ‘ June 23 | Milked dry 783 _ 
a. ‘ . June 23 | Not milked dry TS oye 588 
8, e 4 2 June 24 | Milked dry 3,452 — 
8, ' 5 June 24 | Not milked dry 2,153 |—1,299 
9, - - June 28 | Milked dry Gro — 
9, . H June 29 | Not milked dry 5,175 |—1,637 
IO, : é = July 1 Milked dry 2,742; — 
10, z 4 3 June 30 | Not milked dry | 4,185 1,443 
Average, ‘ : 2 — Milked dry 6,542 — 
Peece 7 i — Not milked dry | 11,324) — 
Increase due to not late dry, — os 4, 18 — 








