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A Manual of Veterinary Physiology. 



of the lateral cartilages, but it will not be amiss to here 

 summarise our knowledge of their use. 



1. They form an elastic wall to the sensitive foot, and 

 afford attachment to the sensitive laminre. 



2. As the foot increases in size the cartilages carry out- 



Fig. 49. — Portion of the Wall Removed, to show the position 

 of the Rigid and Elastic Sensitive Foot. 



a, wall of the foot ; b, the lateral cartilage ; G, a line which represeuts 

 the coronet ; c, the pedal bone — the line of union between the 

 pedal bone and lateral cartilage is well seen ; P, is a portion of the 

 os corona; D, a portion of the sole exposed by the removal of the 

 wall ; E, the heel of the wall left at its plantar surface to show the 

 arrangement of the bar, n, which passes behind and within the 

 lateral cartilage B. The figure, which is accurately drawn from a 

 photograph, is intended to show what an extensive surface the 

 lateral cartilage presents, and the variety of surfaces to which the 

 sensitive laminie are attached; they cover B, C, and f, the latter in 

 the living animal being the position of the extensor pedis tendon 

 and lateral ligament of the foot, to which the lamina) are attached. 

 Further, the figure shows the division of the internal foot into an 

 elastic and a rigid portion. 



wards the sensitive laminae which are attached to them, 

 and so prevent any disturbance of the union of the horny 

 and sensitive lamina;. 



3. Large venous trunks pass through, and close to, the 

 cartilages of the foot, and the movements of the cartilages 

 assist the venous circulation. The function of the lateral 



