_Distinguishing the Sex._ It is difficult to distinguish the sex of geese. It is, of course, necessary to know the sex so as to provide the proper number of ganders and so as to know what birds to pen together in making a mating. Once the sex of a bird is determined it is well for the novice to mark it by means of a suitable leg band so that its sex can be easily distinguished in the future. It is more difficult to distinguish the sex of young than of old geese. The gander is generally slightly larger and coarser than the goose, with a longer, thicker neck and larger head. The gander also has a shriller cry than the goose whose cry consists of a harsher sound. Some goose raisers claim that they can distinguish the sex of mature geese by the body shape, the underline of the body of the gander from the tail to the point where the legs join the body being nearly straight, while in the goose this line tends to round out with the fuller development of the abdomen. This difference is more marked during the laying season than at other times. Considerable experience is necessary in order to distinguish sex by any of the means described and the really sure way is by an examination of the sexual organs or by observing the actions of the geese when mating. Upon examination the sphincter muscle which closes the anus of the female when stretched will be found to have a folded appearance. If the gander is placed upon his back and pressure applied around the anus, the penis will protrude. This test is more easily made on a mature than on an immature gander and is also easier to make during warm than during cold weather. _Purchase of Breeding Stock._ Geese when mated usually stay mated permanently. Matings are not, therefore, changed from year to year as a rule so long as they continue to give satisfactory results. If it becomes necessary to make new matings or to break up old matings, this should be done in the fall, so that the birds will be thoroughly used to the new order of things by the time the breeding season arrives, and the results in eggs laid and young stock grown will not, therefore, be adversely affected. For this reason, any breeding stock purchased should be secured in the fall rather than to wait until just before the breeding season opens. As a rule, also, a better selection of breeding stock to choose from is available to the purchaser in the fall.