an inch and a half in circumference the internal ring is likely to be plugged for the time by the injection.
The larger Hernia.
Should the hernia be large the injection should be made closer to the pubes, but injection at the internal ring is not sufficient, the canal should also be injected with a certain amount of the paraffin and vaseline.
The canal may be injected by passing the needle directly through the outer wall of the inguinal canal, remembering its course about one-half inch above the line of Poupart's ligament.
The most satisfactory plan of injecting where the operator can successfully follow the technic is to find the external ring and then insert the needle directly into the external ring close to its upper margin and to carry the needle along for at least two inches. The suction technic should be followed and the needle should be
moved in all directions as it is withdrawn and the deposit diffused as much as possible.
About the external ring itself and directly between the pillars of the external ring a certain amount of the injection should be placed.
THE AMOUNT OF PARAFFIN TO BE INTRODUCED IN A GIVEN CASE.
The tendency is to overinject a case. One must not forget that the tissues will probably thicken to twice the size of the mass injected. The operator must estimate as nearly as possible the size of the tract to be filled and then aim to throw in enough to about half fill it. The diffusion of the paraffin will usually safely hold the hernia when the patient rises from the table.