20 
Proceedings of Royal Society of Edinhurgh. [sess. 
Figures of Madder- Stained Teeth. 
Fig. 1. Teeth of young rabbit fed on madder for two weeks and 
then killed. 
a. Incisor tooth — surface view. 
h. Incisor tooth — in section. 
c. First premolar — surface view. 
d. First premolar — in section. 
Fig. 2. Teeth of young rabbit fed for two weeks on madder, then 
on ordinary food for two weeks, and then killed. 
a. Incisor tooth — external surface. 
h. Incisor tooth — in section. 
c. First premolar — external view. 
d. First premolar — in section. 
Fig. 3. Teeth of young rabbit fed for two weeks on madder food, 
then for three weeks on ordinary food, and then killed. 
a. Lower incisor — surface view. 
h. Lower incisor — in section. 
c. First premolar— surface view. 
d. First premolar — in section. 
