MILKING MACHINES 117 
time largely prevented the surging of the milk back and forth in 
the long rubber tube. It was thought that possibly the 
surging of the milk in these tubes had something to do with the 
higher germ content by breaking up the groups or clusters 
of the bacteria which were drawn from the udder. It will be 
seen by a study of Table 29 that this change of connectors 


TABLE 30. 
After washing all rubber parts and teat cups placed in 
10 per cent. salt solution between milkings, both day and 
night. 















8 : roa re a ois fa 
3. | Methodof | of $8 33 AOS | BES 
Date | 25 | Milking ES 23 23 | $83 | 333 
ae cS 9 ea) “5A9 icin 
Wane 6) 418. Machine } a.m. {40,720 }11,000 30h 1470 
Hand A.M. | 30,200 |19,960 330 | 1,540 
Wan re) 420° | Machine” | Pp2M..| 12,125 } 2,960 | 3,225 50 
Hand P.M. | 18,775 |13,600 75 460 
Janes |.422 | Machine | a: m.} 19,600 | 5,000 | 3,465 0 
Hand AM. wa l3,600.-)5,000 125 930 
Tames 427.) Machine |} P.M. 3,120 550 430 80 
Hand P.M. 6,430 | 3,940 150 700 
Jan: 9 429 | Machine | a.m. | 22,400 | 5,600 110 130 
Hand A.M. 9,230 | 4,200 65 590 
jen et 4a0,| Machine. | P.M. 2,630 750 160 160 
Hand P.M. 3,925 | 1,092 75 80 
\ettiee LO) 437. | Machine | a.m. | 12,200 | 3,730 900 215 
Hand A: M. 8,970 | 2,925 15 275 
Jan. 10 439 | Machine P.M. 6,920 | 2,620 60 240 
Hand P.M. 3,870 | 1,425 30 325 
Jams, 11 441 | Machine | a.m. | 12,800 | 1,650 | 5,300 150 
Hand A.M. 7,590 | 2,350 40 230 
dE oes 443 | Machine | P.M. 4,890 1,070 | 1,460 0 
Hand P.M. 5,820 | 2,810 0 110 
fametl je4o4;) Machine | P.M. 4,540 980 | 1,600 0 
Hand p,M. | 12,400 | 5,290 60-; 530 
Jan. 13 | 456 | Machine | a.m. | 13,600 | 2,000 | 3,600 0 
Hand A.M. 2,870 690 10 80 
Averages Machine 12-062 soem ie yee 208 
Hand 10,306 |! 5,273 81 487 

did not produce the desired reduction in germ content for in 
all but one experiment the machine milk contained larger num- 
bers of bacteria than did the hand drawn milk at the same 
milking even when the new style of connector with air intake 
was used. 

