Gestation of Cows, 



167 



Number 

 of days of 



vTcblclllUUt 



Cows. 



Cow Calves 



13. ■.11 /^r»l«7rtO 



Twin Cow 

 Calves. 



Twill Bull 

 Calves. 



Twin Cow 

 and xsuii 

 Calves. 



OQA 



oD 



1 D 



20 









OQ1 



Jol 



oy 



90 



1 R 



X o 







1 



oeo 



^ i 





20 









OQQ 







24 









OQ/1 



DO 





33 









OQK. 





9Q 

 isy 



43 





• • 



9 





DU 



99 



38 









i 





9^ 



2*7 









OQQ 







28 





1 





OQO 



zoy 





on 















iU 



13 











Ql 



Q 



y 



22 









OQO 



1 fi 

 lO 



K 

 D 



11 











1 0 



lU 



1 

 X 



9 









^y^ 



Q 



o 



X 



•7 

 » 









^yo 



h 

 1 



Q 

 o 



4 











a 



D 



9 



4 









zy i 



9 



1 



1 









299 



1 





1 









304 



1 



'l 











305 



1 



1 











306 



3 



3 











307 



1 



1 











313 



1 



1 











From tlie inspection of this table it will be seen that the 

 shortest period of gestation, when a live calf was produced^ was 

 220 days, and the longest 313 days; but I have not been able to 

 rear any calf produced at an earlier period than 242 days. Any 

 calf produced at an earlier period than 260 days must be consi- 

 dered decidedly premature; and any period of gestation ex- 

 ceeding 300 days must also be considered irregular ; but in this 

 latter case the health of the produce is not affected. It will also 

 be seen that 314 cows calved before the 284th day, and 310 calved 

 after the 28 5th ; so that the probable period of gestation ought to 

 be considered 284 or 285 days, and not 270, as stated in the book 

 upon Cattle, published under the superintendence of the Society 

 for the Diffusion of Useful Knowledge.'^ 



* In another work, however, entitled " British Husbandry," published 

 under the superintendence of the Society for the Diffusion of Useful 

 Knowledge, the experiments of M. Teissier, of Paris, on the gestation of 

 cows, are recorded to have given the following results : — 



