450 Mr. Hunter’s Obfervations , &c. 
The upper part fhews the rough furface formed by the hairy 
termination of each plate of whalebone. 
The middle part fhews the diftance the plates of whalebone 
are from each other. 
The lower part fhews the white fubftance in which they 
grow, and alfo the bafis on which they fhmd. 
Fig. 2. An outline confiderably magnified, to fhew the mode 
of growth of the plates, and of the white intermediate fubftance. 
A. The middle layer of the plate, which is formed upon a 
pulp or cone that pafles up in the centre of the plate. The 
termination of this layer forms the hair. 
B. One of the outer layers, which grows, or is formed, from, 
the intermediate white fubftance. 
CCCC. The intermediate white fubftance, laminae of which 
are continued along the middle layer, and form the fubftance of 
the plate of whalebone. 
D. The outline of another plate of whalebone. 
E. Tlie bafis on which the plates are formed, which adheres 
to the jaw bone. 
/ 
