159

Major Mitchell, does not know whether breeds of oxen have deteriorated, or altered, but it is certain that rams & bull from England fetch very go large price as is evident to be worth introducing, instead of breeding from original. Durham breed.— Native dogs & English cross readily— think about half way in appearance.— bark about half way in tone— The native dogs howl most dismally, very rarely bark.— are almost useless not the least notion of hunting, or keeping watch how completely nature & instinct modified.—

The partial migrations of birds in same country may explain greater migrations, if American & intersected wider & wider at Rio Plata birds which had originally crossed would continue to cross, means of knowing directions: mysterious.

160

Were the woodcocks, which came Madeira & seized ceased their migrations lost?? I conceive a bird Migrating from Falkland Isd regularly to main land, proof of land having been formerly nearer.

Selby

Magazine of Zoology & Botany No XI p. 390. a slight change in enclosing a common seems in part of— to have almost banished the Grasshopper Warbler —Yellow Wagtail never seen in one district, though common on another, (golden created wren so rare in some countries— nightingale do.— all shows how nicely adapted species to localities—

p. 390. young grebes ring ouzels dive instant touch the water.— capital instances of typical land bird, having habits of a Grebe, structures might follow.—

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