904 THE SENSE ORGANS AND COMMON INTEGUMENT OF THE DOG 
at the distal end of the corresponding second phalanx. The pads have a basis of 
fibro-elastic tissue and fat, which is intimately adherent to the skin and is connected 
by trabeculae with the bones and tendons. The epidermis is thick and largely 
keratinized, and is studded with numerous rounded papillae which are readily seen 
Fic. 723.—Paps or Ricut Fore Paw or Doa. Fic. 724.—Paps or Ricut Hinp Paw or Doa. 
1-5, Digital pads; 6, 6, metacarpal and metatarsal pads; 7, carpal pad. 
with the naked eye. The corium has large papille, and contains sweat glands and 
lamellar corpuscles. 
The claws (Ungues) correspond in form to the ungual part of the distal pha- 
langes, which they enclose. The horn of the claw consists of a body or wall and a 
sole. The former is strongly curved in both directions, and is compressed laterally. 
Fic. 725.—Hatr or Craw or Doc; INNER SurRFACR. 
a, a’, Coronary part; b, volar part of wall; c, sole; d, section of c; e, sectionof wall; 1,coronary border; 2, apex; 
3, dorsal surface. (From Leisering’s Atlas.) 
Its coronary border fits into the depression under the bony collar or ungual crest 
of the third phalanx and is covered by skin. The lateral borders converge and 
enclose the sole anteriorly. The corium presents a coronary part which bears 
papillee only near the coronary border. On the dorsal surface it is thickened to 
form a ridge, and the corresponding part of the horny covering is thick and main- 
"eae 
