Horse. 



Ox.* 



Sheep. 



* The age of the ox, sheep, and pig is tabulated from the data given 

 by Professor Brown in his ' Dentition as Indicative of the Age of Animals ' ; 

 the observations were made by Professor Simmonds. 



t There is considerable variation in the date of development of these teeth. 



+ These teeth are liable to great variation in their date of development. 



