184 ReEporRT OF THE CHEMICAL DEPARIMENT OF THE 
TABLE V.—NUMBER OF BACTERIA PER CUBIC CENTIMETER IN WHOLE-MILK 
AND STRIPPINGS. 


Front left Front right Back left Back right 
quarter. quarter. quarter. quarter. 
DaTR. (gee as ee ee (eres ee ’ eneanRanEn atti te? to 
Whole- Strip- Whole- Strip- Whole- Strip- Whole- Strip- 
milk. pings. milk. pings. milk, pings. milk. pings. 
June 11, p. m.... 53 26 56 140 Lia 401 716 
June 12,a.m.... 646 244 216 429 449 493 629 1870 
June 12, p.m.... 88 ae 356 305 96 105 789 975 

These data strongly support the idea that the interior of the 
udder in such cases is seeded with these organisms, which are 
generally yellow cocci, capable of liquefying gelatin. 
Most striking are thase cases in which the interior of certain 
quarters of the udder is highly contaminated with certain organ- 
isms for long periods, while, at the same time, one or more 
quarters of the udder in the same animal may remain compara- 
tively free from germ life. In the case of the cow used in 
collecting the data shown in the above table, examinations of 
the strippings were made extending over four months. Samples 
were collected by catching one of the last streams from each 
quarter in a sterile test tube, except in a few cases in which 
they were drawn with a sterile milking tube. The samples were 
taken at once to the laboratory and plates prepared containing 
1 ce. and 0.5 ce. of the milk. The results are shown in the 
following table: 
TABLE V A.—NUMBER OF BACTERIA PER CUBIC CENTIMETER IN THE 
STRIPPINGS OF Cow No. 8. 

Front Front Back Back 
DATE. left right left right 
quarter. Quarter. quarter. quarter, 
IAG), Dice's ie vidas Vide ele Sumatera ORs 22 296 372 
J NEA, 1.5 wwe oo Pinel &h 6,8 eldinis ete aicisis oe fe 26 56 173 716 
OUST Oe Ay spies seine 6 oui hie eb emie see le ais 244 429 493 1870 
dune 12 pli we iwk. SatTe state aheknts Gk micte es yp BR aL 1 105 975 
SREY 4 Ue tg a wus dats EEN Coe cee eK cee 22 48 2106 488 
ME ALL Wie Leds eiathes Yara ib iRia' brie a wie in nets estas 36 ays) 280 868 
DULG PA ie ieee bet tees yk bee Re sul ee emt a . vid Wa 10 388 628 
BOD. Tuiwebe's pie phig Greve. cedure widtd' ws Siu wit 391 38684 631 656 
RIOTIC yous tee pistes bist ote eo eleee vite w xipaies ale A 132 450 356 9967 
DIGS 1D. sd views wire vs grab a chy Shere Nie a iretes ae 6 87 138 232 
This table shows that in general the strippings from the back 
right quarter had a germ content of 500 to 800 per cubic centi- 
