same time. This is followed by a sharp increase both in quan- 

 tity and cost. 



Taking all the results as they stand our ten cows produce 

 milk at the following average prices : 



TABLE E. 



*A£ter the 13th period a new cow, No. 4, came in and this reduced 

 individual cost of milk produced for "best cow." 



G. H. WHITCHER, 



Director. 



the 



