178 LAMENESS OF THE HORSE 



tiiorouglily triturated, and then filtered into a clean liottle, when 

 it is ready for use. 



Injection. — The patient should be laid on a table, if one is 

 available, or east, and the foot securely fixed. Then, with an 

 ordinary one-ounce hard rubber syringe. v,ith a good plunger 

 (tried first to note Avhether or not any fiuid works around be- 

 tween the barrel and the plunger), introduce one syringe full 

 of the formaldehyd solution, then thoroughly probe the quittor 

 to determine the number of sinuses. This done, inject each 

 sinus. If two sinuses open on the surface, close one -vith cotton- 

 while filling" the other so that if there is a connection the solu- 

 tion will come in contact with all tissues involved. Irrigate with 

 the full pint of formaldehyd solution first, then follow with six 

 or eight ounces of the bichlorid solution. Never probe the foot 

 nor allow it to be tampered with except in the manner pre- 

 scribed. 



After-Treatment. — Put on a pack saturated with a solu- 

 tion of ])ichlorid of mercurj'^ 1 to 1,000 and let it remain two 

 days. Remove pack, and once daily afterwards wipe off with 

 cotton the secretion which accumulates on the outside, and ap- 

 ply a dry dressing or healing oil composed of phenol, camphor 

 gum and olive oil. 



When Dangerous to Inject. — Never inject a ciuittor in the 

 acute stage. Never inject a (|uittor if considerable lameness is 

 present. On injecting a solution of formalin, hold cotton tightly 

 around the nozzle of the syringe, when the plunger is down, 

 then withdraw the syringe gently and note particularly if the 

 fluid returns through the opening; if none returns cease opera- 

 tions at once, as it is dangerous to proceed farther, it indicates 

 that the sinus is not well defined and the fluid retained will 

 cause much trou1)le and often the death of the patient. 



Experience has taught that, if extensive destructive changes 

 of the foot exist, the Bayer operation is not indicated. In the 

 country, where quittors are not so frequently met as in ur'-an 

 practice, the ]\Ierillat operation is preferable in all cases. How- 

 ever, the cost of the protracted period of idleness, which con- 

 valescent surgical patients require, renders the Hughes method 

 more satisfactory in the hands of the general practitioner, espe- 

 cially in the city. 



Nail Punctures. 



Nail punctures, as herein considered, embrace all penetrant 

 wounds of the solar surface of the horse's foot due to trampling 



