METHOD OF TREATING HOVfcN CATTLE. g(^5 



I considered, that the trocar and canula commonly used Trocar and ca- 

 by surgeons might be employed to advantage for the relief " uI * i >Tefer * 

 of hoven cattle. I have improved the instrument, to answer 

 better the purpose here intended of penetrating the tense 

 hides of cattle; and such alteration materially facilitates the 

 operation. 



The method of applying it is, to penetrate with the trocar Method of 

 and canula through the hide of the beast to the paunch on usin £ them " 

 the near side, about six inches from the back-bone, at an 

 equal distance from the last rib and from the hip-bone; 

 then to withdraw the trocar, and to leave the canula in the 

 wound, until the air which the paunch contained has es- 

 caped. The canula may then be taken out, and the wound 

 covered with a plaster of common pitch, spread on brown 

 paper, about the size of a crown piece. All the danger " 

 incidental to the common mode of stabbing with the knife 

 is effectually prevented, by the canula being left in the inci- 

 sion when the trocar is withdrawn. 



The small expense of the instrument, its portability, the Their advan* 

 ease with which it can be used by an individual, its safety tageSt 

 and efficacy in use, as it has not in any instance failed of 

 complete success, will, I hope, be sufficiently evident, to 

 recommend it to the attention of the Society. A great 

 saving would arise to the owners of cattle, and to the coun- 

 try at large, from genera] adoption of its use. 



A feeding ox will thrive as well after the operation, as if 

 it had never been affected by the disorder. Cows in calf 

 are in no danger from its use. It has been found particu- 

 larly beneficial in preserving rearing calves, and young cat- 

 tle, when afflicted with this disorder, which had hereto- 

 fore been fatal to great numbers of them. 



I beg leave to add the certificates of a few of those gen- 

 tlemen who have witnessed the utility of this method, and 

 whose recommendations have stimulated me to submit it to 

 the Society, in hopes, that by their liberal patronage it may 

 J)e rendered more generally beneficial to the public. 

 I have the honour to remain, Gentlemen, 



Your obedient servant. 



W. WALLIS MASON. 

 Certificate! 



