118 Milk and Its Products. 
in the work done by the different machines of the 
same style and manufacture. This variation is due 
to slight peculiarities in the construction of the in- 
dividual bowls, and which cannot be detected by 
the ordinary senses, and only appear upon an ex- 
amination of the skimmed milk after actual use. 
These differences are well illustrated in a series of 
trials made in different factories,* and shown in 
detail in the following tables: 
ALEXANDRA JUMBO. 
Rated capacity, 2,000 pounds per hour. 
| j : : j 
Pounds Average Pounds | 
No. of ' Average Range |speed of Range sepa- | Per cent 
Date. | of | milk |temper-|, of | bowl, of rated | of fat in 
fac’ |in whole ature. |temper- revolu- speed. per |skimmed 
tory. rai ature. |tions per hour. milk. 
minute. ‘ 
Aug. 19. 7 3,809 0 66-75 7,200 |7,000-7,400) 1,344 25 
20. 8 > 70 68-72 6,985 |6,800-7,200, 1,170 | 15 
* 90.1 8 s 70 | 68-72 6,585 |6.300-6.900, 1611.20 
ne 21, 9 5,928 75 72-81 6,900 6600-7100) 1,882 20) 
23.) 11 4,052 84 80-86 6,600 6200-7, 400, 1,814 | AB. 
Average). . | - -| wm |. .| 6,854 -| 1,564 ' 23 
DE LAVAL, ALPHA NO. 1. 
Rated capacity, 2,500 pounds per hour. 
July 17. 3 | 2,519 80 78-85 | 5,520 |s,800-6,1001 2,606 08 
Aug. 18. 6 3,629 74 73-76 | 5,806 |5,700-6,000° 2,592 05 
Sep. 16. 1 | 1,187 72 71-78), 5,938 5,800-6,000 2,456 03 
a 20.) 22 4,627 82 80-83 6,071 '5,800-6,200, 2,501 04 
21. 23 6,376 78 77-80 6,044 — |6,000-6,200 500 03 
Oct. a.) St 5,588 82 T8-85 5,844 [5,600-6,000, 2,747 13 
4 25 1,802 86 | 85-90 | 6,280 |6,000-6,400 2.040 03 
Average |: 79 |: | 5.928 |: | 2491 06. 
* Cornell University Agricultural Experiment Station, Bulletin No. 105. 
Digitized by Microsoft® 
