A pound of genuine sulphate of copper in sufficient water, for each sack of seed. Arsenic is also used; sulphate of zinc has been recommended; so has quicklime, which is thus used: - Soak the seed in a warm mixture of 36 to 48 oz. of quicklime to 6 or 7 gallons of water. This is for 4 1/2 bushels of wheat: the solution should be sufficient to cover the seed 3 or 4 finger-breadths deep, and it should lie in it 24 hours. M. Bottssingault has proposed to sprinkle the grain, first with water, then with a mixture of 10 parts of lime with 1 of white arsenic. (This was with the double object of preserving the grain, and destroying a plague of field mice.) Sulphate of copper has seemed to give satisfactory results. It would be desirable, however, to find an innocuous substitute, as traces of copper have been found in wheat grown from the steeped seed. This appears to have been discovered in the use of a solution of sulphate of soda with lime, which has proved more successful in France than either arsenic or sulphate of copper. [Doyere recommends for grain infested with weevils, a small quantity of disulphide of carbon to be enclosed in a tight chamber with the grain; in a few hours both the larvAe and the eggs are killed, and the grain is not injured, as on exposure to air the disulphide quickly evaporates.] See Blights, Remedies for.