The stomachs were then reversed, filled with air to their full capacity 

 and hung up to dry iu a well ventilated room. 



All the rennets received uere successfully cured except No. 4, 

 which was so badly cut that it was impossible to stretch it properly 

 and it partially spoiled. It was sprinkled with salt to prevent 

 further decomposition. A considerable portion remained sound and 

 this served for the test recorded below. 



Before the tests were made the rennets were taken down, stripped 

 of fat and worthless parts and cut into small strips. In this condition 

 they were spread out in a well ventilated room and allowed to air 

 dry several days. 



The rennet solutions were prepared by the Blumenthal process. 

 In every case the same weight of rennet was taken and the final solu- 

 tion raised to the same volume, great care being taken to secure, as 

 far as practicable, identical conditions in all cases. The results were 

 obtained with fresh whole morning's milk." 



While, as previously stated, the prfmary object was to determine 

 the influence of the length of time between the last meal and slaughter 

 upon the strength of the renuet ; it was decided also to note the 

 influence, if any, of age and breed ; and averages designed to bring 

 out differences due to those peculiarities will be later given. In 

 respect to breed, however, it should be stated that all were grades. 

 The individual proportion of the blood of the breed, under which an 

 animal appears is a variable and in many cases an uncertain quantity. 

 No attempt is made to state it. 



I am aware of the fact that these averages are less satisfactory 

 than they would be were the number of each breed, and of each age 

 in each breed identical in each of the classes compared ; and it was 

 the original intention to continue the work until five animals of each 

 age in each breed had been included ; but in view of the fact that the 

 work thus far done indicates chiefly a wide individual variation 

 apparently without reference either to feeding, breed or age, it is not 

 deemed best to continue the work. The individual differences within 

 the classes are far greater than the. differences between classes. 



On similar grounds the results for breeds and for animals of 

 different ages are not entirely satisfactory. All other conditions 

 except the particular under comparison are not alike in each class, 

 still it is deemed best to publish the results as they are and to 

 discontinue the work as it does not promise to be sufficiently valuable 

 to warrant its continuance. 



