622 



THE HOME, FARM AND BUSINESS CYCLOPEDIA. 



OX. 



TEMPORARY INCISORS. 



Period. 



Number. 



Position. 



At birth 2 



2 



12 to 14 days old 2 



21 to 28 days old 2 



PERMANENT INCISORS. 



1 year 9 months old 



2 years 3 months old 



2 years 9 months old 2 



3 years 3 months old 2 



TEMPORARY MOLARS. 



21 to 28 days old 



PERMANENT MOLARS. 



6 months old 1 



IS^months old 1 



24 months old 



24 to 30 months old 2 



30 to 36 months old 1 



Central. 



Lateral Central. 



Lateral. 



Corner. 



Central. 



Lateral Central. 



Lateral. 



Corner. 



First, Second, Third. 



Fourth. 

 Fifth. 

 Sixth 



First and Second. 

 Third. 



At one month old the ox has a full complement of incisors, with three 

 temporary molars in each jaw. At two years old the fourth, fifth, and 

 sixth permanent molars are present, and the two central incisors are 

 changed. At two years and a half old the first and second molars are 

 cast, and the lateral central incisors are permanent. At three years and 

 three months all the temporary teeth are shed, and have been replaced by 

 permanent ones. 



