Longevity of English Thoroughbred Horses 51 



Table V gives the full life-table for the two cross-sectional 

 samples (correcting an error in the L^ column of the 1921 

 sample as originally published — Comfort, 1959a); and Table 



Table V 



Abbreviated life-tables for thoroughbred stallions 



VI gives the mean further expectation of life at 4, 10, 15, 20 

 and 25 years for all three samples of stallions, compared with 

 the two main samples of mares. There is no significant dif- 

 ference at any age between the expectation of mares and of the 



