PLATE XXX 



A. UPPER JAW OF A HORSE RISING FOUR YEARS OLD 



First and Second Permanent Premolars. 



Third Permanent Premolar (Crown of Temporary Teeth 

 just cast). 



Fourth Tooth on Each Side, or First Permanent Molars. 



Fifth Tooth on Each Side, or Second Permanent Molars. 



Sixth Tooth on Each Side, or Third Permanent Molars, 

 just into Wear. 



Permanent Central Incisors. 



Permanent Lateral Incisors. 



Temporary Corner Incisors. 



B. LOWER JAW OF A HORSE RISING FOUR YEARS OLD 



Numbers have same reference as in A. 



