64 



DISEASES OF THE HORSE'S FOOT 



Lungwitz's article on the subject, Colonel F. Smith, A.V.D., 

 had arrived at similar conclusions by working on the same 

 methods. 



It is unnecessary for our purpose here to minutely 

 describe the exact m(xlus operandi of these two experi- 



I. Left Fore-foot Shod and Mounted to recognise the Sinking 

 OF the Sole. 



a, Irou plate covering the inner half of the horny sole ; h, openings in the 

 same, with screw-holes for the reception of the contact-screw c (the ])art 

 of the sole under the plate is covered with tinfoil, which at d passes out 

 under the outer branch of the shoe, and becomes connected with the tin- 

 foil of the wall ; in order to give the freshly apjilied tinfoil a better hold, 

 copying-tacks are at e passed through it into the horn, and one is similarly 

 used to protect the tinfoil at the place where the contact-screw touches 

 the latter) ; /, holes with screw thread for the fastening of the angle 

 required to measure the movement of the wall, and also for the fastening 

 of the conducting- wire, g ; h, conducting-wire passing from the tinfoil ; 

 i, isolated nails. 



II. Bar-shoe with Openings. 



a. Near the inner margin and in the longitudinal bar ; b, for the reception of 

 the contact-scrcAV c ; d, openings for fastening the angle and the con- 

 ducting-wires. 



menters. Briefly, the method of inquiry adopted in each 

 case was the ' push and contact principle ' of the ordinary 

 electric bell, and the close attention which was paid to 

 detail will be sufficiently gathered from Figs, 35 and 36. 

 After numerous experiments with the depicted contact- 



