GENEEAL OBSEKVATIONS 



61 



Fig. 33. — Horizontal Section of Horn through the Junction 



OF THE Wall with the Sole. 

 a, Horn tubule of the wall ; &, horn tubule of the sole ; c, d, horny laminre. 



Fig. 34. — Section o^ Frog through Corium and Horn. 



The long finger-like projections of corium into epidermis are sections of the 

 long papillfe from whicli the hom-tubes of the sole grow. In the stainable 

 portion of the epidermis are to be clearly seen light and dark streaks 

 pointing out the alternate strata-like arrangement of cells mentioned in 

 the text (Mettam). 



