THE CORONARY FJAND. 



69 



Fig. 40. —Foot deprived of horny capsule, a, coriiun, 

 bearing hairs ; towards the left the hairs have been 

 removed by gentle stroking, b, perioplic ring ; c, 

 coronary band ; d, sensitive wall ; at the base of 

 the laniinaj can be seen papilhc. 



posterior portions, however, are overtopped by the lateral carti- 

 lage, and by the perioplic ring (compare fig. 41). The coronary 

 band is convex on its ante- 

 rior surface, and is broadest 

 and strongest above the 

 toe. Towards the sides it 

 somewhat diminishes in 

 size and becomes less pro- 

 minent, until, in the region 

 of the bulbs, it almost alto- 

 gether loses its convex 

 shape, becoming nearly Hat. 

 The coronary band ex- 

 hibits numerous papilla?, 

 whicli, though they vary 

 greatly in length and thick- 

 ness, are, as a whole, much 

 longer and stronger than those of the perioplic ring. They are 

 best marked in the lower third of the band, where the strongest 

 of them are to be found, 

 as can easily be seen by 

 examining the upper 

 part of the hoof after 

 removal. The length of 

 these papilla? varies in 

 general from ^ to ^ inch, 



thouo'h Leisering has 

 seen some as short as 

 j^ inch and others as 

 long as ^ inch. These 

 papillae, however, do not 



cease at the junction of fig. 41. Foot from which the outer portion of the liom 



wall and the greirter part of the sensitive structures 

 have been removed, so as to show their relations to 

 the lateral cartilage, a. divided surface of the hair- 

 l)earing corium ; the cvit is continued perpendicularly 

 downwards through the sensitive wall, showing that 

 the latter is only a continuation of the former ; a, 

 hairless portion of hair-l)earing corium ; b, perioplic 

 ring ; &', line indicating its upper border ; b", section 

 of perioplic horn; o, coronary band; c (to the left), 

 line indicating the upper border of the coronary band ; 

 ('.", section of wall at toe ; rf, sensitive wall ; e, horny 

 sole ; /, white line ; .7, horny ifrog ; h, plantar cushion ; 

 /, lateral cartilage. 



the coronary band and 

 plantar cushion, but are 

 reflected in the form of 

 two 

 about ^ 



converojino- rows, 

 to 4 an inch in 

 breadth, over the pos- 

 tero-inferior parts of the 

 foot, between the margins of the sensitive laminae and of the 



