PRINCIPLES OF VETERINARY SURGERY 



547 



touch, colored black, but not prominent. They are asso- 

 ciated in variable numbers and have v^rell defined limits. 

 The size increases by degrees, until they attain the dimen- 





FiG. 67. Pigment. 



d. Free, Pigmentary Granules, c, n. Pigment Granules of the Cells of the 



Malpighian Layer of the Skin. 1, m. Masses of Pigment in the Cells. 



b. Polyhedric, Pigment Cells of the Choroid, q. Irregular 



Pigmentary Cells, g. Pigment Cells with Drops of 



Oil in Their Midst. 



sions of a hazel-nut, a walnut, an egg, the fist, the head, or 

 even enormous masses with irregular, tuberous, mammil- 

 lated, hard, unyielding and elastic surfaces. The masses 

 are dark and destitute of hair. [The cutaneous melanotic 



