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from it in form, properties, and habit; and in process of time, as the blood of the one family is diminished, that of the other will be increased, till improvement or approxi- mation to either side, to the degree wished- for, be attained.— When this business goes on, the progeny must be reared according as the constitution of one or other of the parents, or rather set of parents, is most striking in its composition. Any mongrel breed, if indifferently managed, especially at first, readily becomes diseased and de- formed.

Sundry examples might be mentioned of the good effects of crossing the breed.

‘The great improvement of the breed of horses in England arose from crossing with those diminutive stallions, Barbs and

Arabians; and the introduction of Flanders

mares into this country, was the source of improyement in the breed of cart horses.— The form of the swine has also been greatly improved, by crossing with the small Chinese boar.’:

Examples also occur of the bad effects of crossing the breed.

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