30 



Journal of Agricultural Research voi. xvii, no. i 



In Table IV data are given on the initial weight of the lamb or lambs 

 and the gain in weight every lo days during the period of the experiment. 

 The total gain is also included. 



Table V is a combination of the results on total inilk yield and the 

 total constituents of the milk, expressed in grams, calculated from 

 the average percentages secured on the 50-day period, and also data 

 on the total gain in weight of the lambs. 



Table VI gives the averages of the above constituents for each breed. 



TablB V. — Relation of Milk Constituents of Individtial Ewes to Growth of Lambs 



n Ewe had triplets, one was taken away on ninth day. 

 b Lamb had leg broken on ninth day and was removed. 



In a comparison of the total quantity of milk constituents and the 

 total growth of the lambs there is one disturbing factor. In all breeds, 

 with the exception of the Lincoln, twins were born to one or more ewes 

 in each breed, and in one case triplets. The three Lincoln ewes all 

 gave birth to single lambs. It is obvious that in comparison of quantity 



