The average amount of milk curdled by one part of water free 

 rennet from the annuals of the different breeds is as follows : Jersey, 

 27,945; Holstein, 22,665; Hereford, 20,143, and Shorthorn, 16,348. 

 These figures appear to indicate a considerable difference in strength 

 of rennet due to breed ; and although the numbers of the different 

 ages and for different lengths of fast in the breeds compared are not 

 identical, yet it is not believed any injustice is done to either breed 

 in respect to these points. This is made evident from the following 

 tal)ular view showing the standing of the breeds in these respects. It 

 will be seen that they are fairly well distributed as to length of fast 

 and aoe. 



The differences within each of the breeds, as may be seen by refer- 

 ence to the tables indicating the strength of the i*ennets, are, however, 

 larger than the difference between the breeds. Thus the extremes 

 for Jerseys are 9188 and 43261 ; for Holsteins, 7974 and 53,404 ; for 

 Herefords, 14,663 and 24731, and for Shorthorns, 11,359 and 21,673. 

 Further, the average for the lowest five Jerseys is 17,292; for the 

 highest six it is 36,826. The latter is more than twice the former, 

 thus exceeding it in far greater proportion than this breed appears to 

 excel the Shorthorn, which stands as the lowest breed. Similar 

 averages in other breeds will show about equally great variations. 

 It must be concluded, therefore, that our results are not such as to 

 warrant any positive deductions as to differences in rennet strength 

 due to breed. 



The averages for the different ages are as follows : Parts milk 

 coagulated by one inirt v:ater free rennet: 



From Calves 5 days old, 28,597. 



" " 28 to 30 " " 19,057. 



" 35 " " 19,084. 



" " 42 " " 20,558. 



