PLATE XVI. 



Figure 1. — Cross section of a palatine, showing the microscopic struc- 

 ture. The broken line m-n divides the true bone of the upper two-thirds 

 from the osteodentine of the lower third ; a and b, two large blood vessels 

 of the osteodentine; c, a large blood vessel of the true bone. The osteo- 

 dentine differs from the true bone above in being much more compact, 

 more uniform in density, and in having fewer blood vessels. The mesial 

 .side of the section is to the right in the figure. The drawing was made 

 by means of a camera lucida. 



Fig. 2. — Diagram of a palatine bone. The line .i-.r indicates where the 

 section (fig. 1) was taken. 



