232 



Journal of Agricultural Research voi. xxn. N0.4 



Table I. — Age of ewe and fertility 



" This may be a mistake in the record. 



AGE OF RAM AND FERTILITY 



Table II gives the percentages of lambs bom as singles, twins, and 

 triplets bom from sires of various ages. From these percentages one 

 can not ascribe to the ram any influence on fertility. Carlyle and 

 McConnell {2) thought that i -year-old rams were not so prolific as 

 older rams, but this is not borne out by the figures in Table II. 



Table II. — Age of ram and fertility 



TIME OF BIRTH AND TWINNING 



Heape (5), who gathered information from flock masters, states that 

 55 per cent of them reported that twins were usually born early in the 



