92 VETERINARY LECTURES 



highly supplied with bloodvessels and nerves. The coronary band 

 {Plate XII., No. 3, K K) is situated in the hollow or semicircular 

 groove which runs round the top and inner aspect of the hoof, and is 

 attached to the true skin by its upper margin, while the under 

 portion is covered with minute sprout-like projections (papillae), 

 which dip into the small orifices of the wall and secrete the horn 

 fibres. The sensitive laminae, or leaves (Plate XII., No. 3, H), 

 correspond in number to those of the non-sensitive or horny laminae 

 seen on the inside of the wall of the hoof, to which they are firmly 

 attached. The sensitive laminae surround the bony structures of 

 the foot, to which they are connected by dense connective tissue, 

 and they assist in the secretion of horn. The sensitive sole 

 (Plate XII., No. 3, I) is attached to the bottom of the coffin or pedal 

 bone, and the under surface next to the horny sole resembles a piece 

 of fine velvet, being covered with small projecting papillae, which not 

 only secretes the horn, but also gives attachment to the non-sensitive 

 sole. The sensitive frog (Plate XII., No. 2, D), sometimes called 

 the fatty frog, is situated at the back part of the foot, and lies 

 between the wings of the coffin bone, above the horny frog ; it 

 acts as a cushion by supporting the weight in progression 

 (Side-Bones, par. 192). The tendons found in the foot are the 

 terminal point of the extensor and flexor muscles of the limb, and 

 the ligaments are those in connexion with the foot (Pbate XII. , 

 Nos. 1 , 2, and 3). 



172. In the Foot there are Three Bones: (1) The coffin or 

 pedal bone (Plate XII. , No. 2, B). This bone is crescent-shaped, 

 the body resembling the front of the hoof, with an elevation in front 

 at the top. The two quarters or wings run backwards on each side, 

 to which are attached the lateral cartilages(Hate XII., No. 3, L L), 

 that so often in cart-horses become ossified and form side-bones. 

 The bone itself is very porous in structure, and contains numerous 

 fissures, thus allowing the ramification of nerves, bloodvessels, etc. 

 (2) The coronary, or short pastern bone (Plate XII. , No. 2, A), 

 which is situated above the coffin bone, forming with it a joint, into 

 the formation of which also enters — (3) the navicular, or shuttle bone 



