Every effort should be made to prepare a good mealy tilth by suitable ploughing, harrowing and consolidation.
Aphides are provided with a mealy skin, which does not allow water to be attached to it, and thus insecticides for destroying them contain soft soap, which fixes the solution to the skin; paraffin is added to corrode the skin, and the up the breathing pores and so produces asphyxiation.
The Large Black breed, which vies with the Large White breed for size, and is probably its superior as a bacon pig, has only since 1900 received national show-yard recognition; but there is ample evidence that, with its characteristic whole black colour with a mealy hue, length, fine hair and lop ear, the Large Black existed in the south of England for generations.
The chief British genera are Primula, including P. vulgaris, primrose, P. veris, cowslip, P. elation, oxlip, and the small alpine species P. farinosa, with mealy leaves; Lysimachia, loose strife, including L.
There has also been very little naturalization of parrots, but the rosella parrakeet of Australia (Platycercus eximius) is being propagated by escaped captives in the north island of New Zealand, and its ally the mealy rosella (P. pallidiceps) is locally wild in Hawaii, the stock in this case having descended from a single pair intentionally liberated.