284 



Twenty-seventh Annuae Report 



TABLE XIII. TWIN INHERITANCE STUDY 



lambs, but single ewes gave birth to a slightly larger percentage of 

 single lambs than twin ewes did. The single ewes produced 58. 65 

 percent single lambs, while the twin ewes produced 55.55 percent single 

 lambs. Twin ewes showed a slightly greater tendency toward twin 

 production, having thrown 44.45 percent of twins as compared with 

 41.35 percent for the single ewes. Further study will be given to this 

 question. The lambs dropped in the spring of 1916 have not been 

 tabulated, but it is thought that they will not change the results greatly. 

 Monthly gains in lambs: During the past year the lambs have 

 been weighed and a careful record made of the gains. Table XIV 

 gives the average monthly gains of the lambs classified according to 

 breeding. 



