Fig. 21. Artificial Epithelial Pearls 



A picture similar to the one shown here appears in cancer of the skin, 

 and is considered of value for diagnosing this disease. The artificial 

 epithelial pearls are obtained by letting a thick layer of gelatin dry up on a 

 plate at moderate heat, then observing the gelatin under slight magnifi- 

 cation. (Magnified 60 times.) 



(According to Dr. Martin H. Fischer of Cincinnati.) 



ft: '\'>^*-V 





/ 



Fk;. 22. Real Epithelial Pearl Occurring in Cancer of the Skin 



(Magnified 80 limes.) (From Boyd, Test-book of Pathology, by courtesy 

 of Lea & Febiger, publishers.) 



36 



