254 
The Trials of Milking Machines , 1913. 
Machine K. 
Morning 
Evening 
19 th . 
. 4,900 
690 
20th . 
. 50.800 
2,100 
21st 
. 1,600 
560 
22nd . 
. 1,900 
990 
23rd . 
. 2,600 
2,700 
Total 
. 61,800 
7,040 
Average 
. 12,360 
1,408 
Average morning and evening combined 
. 
6,884 
Position according to bacteriological content 
* 
9 th 
Comments. — Here 
the rubber tubing 
is relatively short. 
The air from the pulsators passes through the tubes with the 
milk. The teat cups fell off on many occasions. 
The can was 
readily cleansed; 
Machine N. 
Morning 
Evening 
19 th . 
. — 
4,010 
20th . 
9,600 
2,500 
21st . 
6,700 
1,940 
22nd 
. 14,900 
1,940 
23rd 
1,200 
6.300 
Total 
. 32,400 
16,690 
Average 
8,100 
3,338 
/ 
Average morning and evening combined . . 5,719 
Position according to bacteriological content . . 8th 
Two methods of delivery were adopted : (a) The milk 
passed first through rubber tubing, then through a long 
metallic tube into a can which, tipping over, delivered it into 
another length of metallic tubing and thence to a pail. It was 
quite clear that all this apparatus would not be kept clean. 
( b ) The milk passed through rubber tubing into receptacles 
which were long, narrow, easily upset and difficult to clean. 
In both cases the teat cups could fall off and suck up dust 
from the floor. 
The following machines — 0, P, Q — are of quite a different 
type to any of these previously considered. The milk being 
obtained by pressure instead of suction. 
Machine O. 
19 th 
Morning 
1,400 
Evening 
210 
20th . 
1,100 
200 
21st . 
1,000 
410 
22nd 
700 
130 
23rd 
500 
1,100 
Total 
4,700 
2,050 
Average 
940 
410 
Average morning and evening combined . . 675 
Position according to bacteriological content . . 1st 
