DIFFERENCES IN HISTOLOGICAL STRUCTURE OF TEETH. 469 



DESCRIPTION OF PLATE 36, 



Illustrating Mr. Charles S. Tomes' paper "On Differences in 

 the Histological Structure of Teeth occurring within a 

 Single Family — the Gadidse/' 



Fig. 1. — Apex of tooth of a ling (Molva) with its euaincl cap. X 40. 

 Fig. 2.— Apex of tooth of a hake (Merlucius). x 40. 

 (Pigs. 1 and 2 comprise about one fourth of tlie entire length of the teeth.) 

 Fig. 2*.— Portion of a moveable gill-raker from the first branchial arch of 

 a hake, x 100. 



Fig. 3.— Entire tooth of Brosmius. x 30. 



Fig. 4. — Nearly entire tooth of Kaniceps. x 50. 



Fig. 5.— Portion of dentine of cod (G. morrhua). x 90. 



Fig. 6. — Tooth of Gadus luscus. x 50. 



Fig. 7.— Toothof Gadus minutus. x 50. 



Fig. 8.— Tooth of pollack (G. pollachius). x 50. 



Fig. 9.— Tooth of haddock (G. aiglefinus). x 60. 



Fig. 10.— Tooth of coal-fish (G. virens). x GO. 



Fig. 11.— Tooth of burbot (Lota vulgaris), x 80. 



Fig. 12.— Tooth of Lotella. x 45. 



Fig. 13. — Portion of tooth of Uralcplus. x 50. 



Fig. 14. — Teeth from branchial arch of Uralc))lus. x SO. 



Fig. 15.— Tooth of Phycis. x 80. 



Fig. 16.— Tooth of Motella, x 50. 



