ABNORMALITIES. 



^7 



In the dentigerous cyst depicted on a preceding page 

 (Fig. 13) the testicle was much larger than normal, being six 

 and a half inches in length. There was gland tissue in the 

 centre and a dermoid cyst at either extremity. In the anterior 

 portion there were plates of bone and cartilage, and in the 

 centre of the cavity there was a roundish mass about the size 

 of an orange, containing several teeth in various stages of 

 development. The mass was fairly easily detached into nine 

 piece.s. One was almost a perfect molar tooth, being 2I inches 

 long and grooved like an ordinary molar. At the end, which 



Cystic 

 portion. 



Dentigerous 

 portion. 



Fig. 1.5. 

 Same as Fig. 14, but showing tlie other side 



would correspond to the wearing surface in the ordinary con- 

 dition, the infolding of the enamel was well shown. Six of the 

 other pieces, one of which was bent upon itself, all bore more or 

 less resemblance to molar teeth, the smallest being \\ inches in 

 length. The three usual constituents, enamel, dentine, and 

 cementum, entered into their composition. 



The posterior extremity of the testicle contained a cyst 

 having a wall chiefly composed of bone and cartilage. Inside 

 this cavity were two smaller ones, one of which contained a 

 coil of hair, black in colour and mixed with the dt'bris usually 

 found in these cases. 



