PERIOD OF GESTATION. 



405 



Mr. Bement had " doubts as to the correctness " 

 of the shortest period given 213 days which is evi- 

 dently an error, as he has in no other instance ob- 

 served a period " below 260 days." 



The minimum of Mr. Bement's observations, if 

 not an error, must be considered decidedly premature. 



In M. Tessier's observations on sheep, 1 of 912 

 ewes 



140 lambed between the 146th and the 150th days; mean time, 



148 days. 

 676 lambed between the 150th and the 154th days ; mean time, 



152 days. 

 96 lambed between the 154th and the 161st days; mean time, 



157 days. 



In 420 ewes under the observation of M. Magne, 

 at Alf ort, the period of gestation was 



149 days for 



148 " " 



150 " " 

 147 " " 



151 " u 



146 " " 



152 * " 



80 

 68 

 55 

 55 

 49 

 30 

 23 



1 " The Complete Grazier," p. 238 ; " British Husbandry," vol. ii. 

 p. 457 ; Youatt on " Sheep," p. 496. 



