ready for use.

Injection.--The patient should be laid on a table, if one is
available, or cast, and the foot securely fixed. Then, with an
ordinary one-ounce hard rubber syringe, with a good plunger (tried
first to note whether or not any fluid works around between 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 with cotton while
filling the other so that if there is a connection the solution
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 prescribed.

After-Treatment.--Put on a pack saturated with a solution of
bichlorid of mercury 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 apply a dry dressing or
healing oil composed of phenol, camphor gum and olive oil.

When Dangerous to Inject.--Never inject a quittor in the acute
stage. Never inject a quittor 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 operations 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 trouble 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 urban practice, the Merillat
operation is preferable in all cases. However, the cost of the
protracted period of idleness, which convalescent surgical patients
require, renders the Hughes method more satisfactory in the hands of the
general practitioner, especially 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 upon