operated on, are immediately travelled back a certain portion of the distance, night and morning, until they arrive at home. I have, therefore, no hesitation in recommending a moderate degree of motion in preference to absolute rest, as practised among us: it is a plan which has long been followed with success among our own cutters; and perhaps our not adopting it before has arisen from prejudice against whatever was practised by illiterate persons, without reflecting that, illiterate as they are, their employers are not all so; and that, unless success attended their practices, they would cease to be employed. For the French mode, twitching, &c., _vide_ GOODWIN, BLAINE, &c. * * * * * _When a colt is to be gelded._—In the first or second week in June he should be cut; and when recovered he should be turned out for the summer. * * * * * “I would not operate,” says Mr. Percivall, “during the season of changing the coat, nor even just prior to that period, from fear of interrupting the process, or checking it altogether; neither would I choose frosty or sultry weather: but, above all, it is advisable to suspend the operation when the flies abound. If the subject have passed the colt period of age, I would recommend a dose of aperient medicine before the operation be undertaken, unless he should be already living on green food.” * * * * * Each testicle should be taken out of the scrotum separately, by an opening sufficiently large, when a ligature should be applied, moderately tight only, around the spermatic chord, about an inch and a half beyond its insertion into the testicle; the separation should then be effected by the scalpel or knife, between the ligature and testis. It is sometimes performed without the ligature, by making the division of the chord with a red-hot knife, but the other is the neatest and safest mode. * * * * * The castration of cats is sometimes practised to keep them from roving, or to increase their size. For this purpose nothing more is requisite than to make a slight opening on each side the scrotum, to slip out the two testicles, and draw them away with the fingers. The rupture alone of the spermatic chord prevents hæmorrhage in them, and no future inconvenience is felt. It is often found difficult to secure a cat for this operation; but it may be easily managed in two ways:—one by putting the head and fore-quarters of the animal into a boot; the other by rolling his whole body lengthways in several yards of towelling; but the former is the most secure and simple, for no animal is more intractable, as a surgical patient, than grimalkin: though to administer medicines to a pig beats the cat hollow, as an obstreperous operation.—_Blaine_—_Nimrod_—_Percivall._ CASTRATION, _s._ The act of gelding.