DESCRIPTION OF PLATE II. 



The Figures illustrate Mr. Ilutchinsotis lieport on Malformations^ 

 Si/i)hilitic and otherwise^ of the Teeth. 



Fig. 1. The lower incisors of a girl aged 15, the subject of inherited 

 syphilis. The teeth are very short, rounded, and peg-like, with 

 wide inte^p)aces. This sketch shows the most typical condition 

 ever exhibited by the lower set. 



Fig. 2. The milk-teeth (upper set) of a syphilitic child aged nearly 3. 

 The necks of the four incisors have been attacked by circular 

 caries, which has wholly spared the canines. The extremities of 

 the lateral incisors have already fallen away, and those of the 

 centrals will soon follow. 



Fig. 3. The milk-teeth (upper set) of a girl of 5, the subject of inhe- 

 rited syphilis. The central" incisors have been destroyed by caries, 

 and their stumps exfoliated ; and of the laterals, only the stumps 

 remain. The canines are perfect. The sketch shows a further 

 stage of progress of the changes illustrated in Fig. 2. 



Fig. 4. The temporary canines (upper and lower) of a boy aged 9, the 

 subject of inherited syphilis. They are remarkably symmetrical, 

 and all of them show a central tusk-like projection, the result of 

 a peculiar circumferential wearing away (not caries). 



Fig. 5. The upper permanent teeth of a boy aged 11, not syphilitic. 

 The teeth are somewhat honeycombed, of bad yellow colour, and 

 have peculiarly thin and narrow edges. They differ from the 

 syphilitic type, in all possessing, in greater or less degree, the 

 same features, instead of each pair having its own peculiarities. 

 Possibly the result of a mercurial course in infancy. 



Fig. 6. Two upper permanent central incisors, not syphilitic, but of the 

 type known as " craggy teeth." They are larger and wider than 

 syphilitic teeth, not notched, and of much harder structure. 



Fig. 7. Thin-edged and broken teeth, not syphilitic, from a woman 

 aged 20. In these they result not so much from the softness and 

 original malformation of the teeth, as frond their preternatural 

 thinness and brittleness. Near the edges of the lower set a 

 horizontal line or notch is seen to extend. 



Fig. 8. The permanent front teeth of a boy aged 15, who had taken 

 much mercury in infancy. The teeth are all of them of yellow 

 colour, somewhat pitted in their surfaces, and very thickly coated 

 with tartar. Near the edges of the lower set, a horizontal line 

 extends, similar to that adverted to in Fi<?. 7. 



