Protrusion of the penis from the sheath, with loss of power to draw it back again, sometimes arises from paralysis of the muscle by which it is retracted.

Inability to withdraw the organ into the prepuce not infrequently results from a constriction of the inner folds of the sheath following upon injury or disease, but cases have occurred in the experience of the writer where no such condition existed to account for the morbid state, and he is forced to the conclusion that paralysis of the part referred to was the result of loss of nervous power.

These cases are more especially found in stallions of the heavier breeds.

As to the particular cause by which the mishap is brought about we have no explanation to offer. It is not necessarily associated with paralysis of the muscles of locomotion; the desire for service still remains, but a full and competent erection cannot be effected.

Such treatment as is usually resorted to, viz.: blisters to the spine, the administration of the salts of iodine, strychnine and iron tonics, have not been attended with benefit.

Where the protrusion is considerable and unsightly, removal of the organ by means of an operation is the only remedy.