128 THE SENSE OF TOUCH IN AMIMALS 



\ I Young adult.) x 25 Manus, D. 5. Terminal 

 Ijhalanx, radial side ; imbrication distal. 



of papillary ridges in a distal direction, and of the papillae of 

 the corium. Stratum ccrneum of the epidermis a little macerated. 



Fig. 165. — Longitudinal section from the plantar surface of 

 the heel on the fibular side, epidermis thickened, papillary 

 ridges imbricated in a proximal direction, and papillae of the 

 corium taking the same course. 



BIRDS. Apteryx manteUi (Fig. 166). — Longitudinal section 

 from the terminal phalanx of a digit of the foot. Scales shown 

 to take a distal slanting direction, and papillae of the corium 

 similarly slanted, these being wide, and each divided into 

 numerous secondary papillae. 



Rhea Aynericana (Fig. 167). — Longitudinal section from plantar 

 eminence of foot. Scales rough and thick. Papillae of the 

 corium very highly developed, and extending close up to the 

 free surface of the epidermis. 



Perdix ainerea (Fig. 168). — Longitudinal section from terminal 

 phalanx of D. 3. Scales imbricated in a distal direction, papillae 

 of the corium large, and passing up near to the free surface of 

 the epidermis, and divided into secondary papillae. 



Lagopus (Fig. 169). — Longitudinal section through terminal 

 phalanx. Scales not imbricated. Papillae wide, and extend 

 close to free surface, not divided up into secondary papillae. 



Ciconia alba (Fig. 170). — Longitudinal section through 

 proximal phalanx of a digit, scales very much imbricated m a 



