In our selection of parents for multiplying a breed a variety of circumstances should necessarily engage our attention; as, whether we are continuing a race already established, improving a defective one, or altogether forming a new variety. In either case, but particularly in the two latter, one or two propagations are not sufficient to enable us to judge of the merits or demerits of the products: anomalies may occur, monstrosities appear, or dogs may breed _back_. It should likewise be always present to us, that, in despite of all our care, and in face of the most favourable opportunities for selection, still _perfect specimens_ to propagate from are unattainable; and as, therefore, we are necessarily to expect defects, it should be our care to well examine that we do not select our male and female parents with each the same faulty form or property; for, however perfect they may be in other respects, they are, in such a case, totally unfit to breed from together. We may, for instance, suppose an otherwise eligible pair of pointers, of the purest blood, but that each, from early and constant confinement, had contracted long, weak, spreading phalanges or toes, instead of a round, cat-like form of foot. By choosing a mate for each of these whose feet were unusually small, round, and firm, we might remedy this defect, and preserve their excellencies; but it would be only propagating deformity to breed from them together. We can only expect to prove successful in rearing a superior race of any domestic animal, when we make our selection of parents with a careful reference to the merits and defects in each, by balancing the one against the other, and by thus combining their different properties. It is by inattention to these circumstances that so many persons, after giving immense prices for animals of particular stocks, have found themselves foiled in their attempts at rearing any thing beyond mediocrity, which animals, under the judicious management of a Russell, a Coke, or an Ellman, among cattle, or an Orford, a Meynell, a Rivers, or a Topham, among dogs, would have produced unrivalled forms. _Breeding In-and-In._—Among the practical and systematic breeders of all domestic animals, and among none more than those sportsmen who devote themselves to the improvement of the dog, a great diversity of opinion has always existed on the subject of _consanguineous breeding_, or of that between near relations, characterised by the term _In-and-In_. The conflicting authorities on the subject are numerous, and the testimonies contradictory; and it is more than probable that they will remain so, until a long course of experiment is undertaken by a body or society of scientific and observant breeders on various domestic animals, for the express purpose of arriving at the truth in this particular.