PLATE X. 

 Fig-. I.— The Digit with the Hoof removed, flexed and viewed 



FROM BEHIND. 



A. Sensitive sole ; B. Sensitive laminae that were interleaved with the horny lamina; 

 of the bar ; F. The pyramidal body, or sensitive frog ; L. Lateral lacuna of the same ; 

 M. Median lacuna of the same ; Q. Q. Fibrous sheath uniting the two branches of the 

 perforatus ; R. Branches of the perforatus passing to be inserted into the os coronse ; 

 T. Tendon of the perforatus; T 1 . Tendon of the perforans in its passage between 

 the branches of the perforatus ; V. Reinforcing sheath of the plantar aponeurosis ; 

 X. Attachment of the same to the side of the os suffraginis. 



Fig. II.— Vertical mesial Section of the Digit. 



A. Os pedis ; B. Coronary cushion ; C. Coffin-joint ; D. Navicular bone ; E. 0» 

 coronse ; F. Pastern-joint ; H. Branch of the perforatus at its insertion into the lateral 

 aspect of the os corona; ; I. Insertion of the plantar aponeurosis into the semilunar 

 crest ; K. Os suffraginis ; L. The perforatus tendon ; M. Ligament of yellow fibrous 

 tissue which unites the anterior face of the perforans to the posterior face of the os 

 coronae, and separates the inferior cul-de-sac of the great sesamoid sheath from that of 

 the synovial membrane of the coffin-joint; N. Protrusion of the synovial membrane of 

 the corono-pedal joint between the navicular bone and the os pedis ; O. Small sesamoid 

 sheath ; P. Synovial membrane of the coffin-joint in contact superiorly with the great 

 sesamoid sheath, from which it is separated by the yellow transverse ligament M ; 

 T. Tendon of the perforans ; Y. Fetlock- joint. 



Fig. III.— Arteries of the Digit. 



A. A. Digital artery ; C. Perpendicular artery at its origin : H. One of the posterior 

 branches (rameaux e'chelonnes) for the perforans tendon ; J. Another of the same ; 

 K. Origin of the artery of the plantar cushion; M. Origin of anterior branch of 

 coronary circle ; M 1 . Posterior branch of the same circle ; R. Origin of preplantar 

 artery ; S. Plantar artery in the plantar groove and in the os pedis, forming with 

 the opposite artery the semilunar anastomosis ; V. V. Descending branches from the 

 semilunar anastomosis. 



Fig. IV.— The Hoof— plantar aspect. 



P. P. Region of the toe ; S. Sole ; L. Frog ; A. White line at the junction of wall and 

 sole ; B. Angle of inflexion of the wall, showing the continuity of the wall and the bar ; 

 E. Inferior edge of the bar ; F. Lateral lacuna of the frog ; G. Bulbs of the frog ; 

 Q. Median lacuna of the frog ; U. Regions of the quarters ; O. Regions of the heels. 



Fig. V.— Extremity of the Digit with the Hoof removed— viewed 

 from the side. 



A. B. Plantar cushion with its villosities ; D. Groove between the plantar cushion 

 and the pjerioplic ring ; E. Perioplic ring ; F. Inferior border of the plantar 

 cushion ; G. Sensitive lamina;, or podophyllous tissue ; H. Villosities which 

 terminate the laminae. 



Pig. VI.— Antero-posterior mesial Section of the Hoof— showing 

 its interior. 



M. Series of horny laminae ; O. Section of the wall ; P. Section of the sole ; 

 S. Upper edge of the periople above the cutigeral groove ; T. Section of the frog ; 

 X. Cutigeral groo.ve. 



