This section is from the book "Commercial Gardening Vol1", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
Acetate of lead (98 per cent) ... ... ... 2 3/4 oz.
Arsenate of soda (98 per cent) ...... ... 1 „
Water to make ... ... ... ... ... 10 gal.
Place materials in water and stir till dissolved, when the liquid will be ready for use. One pound of treacle or soft soap may be added, if desired, to make the liquid adhere better. This mixture is now considered superior to Paris Green, as it is much lighter and does not scorch the foliage. From 1 to 2 lb. of arsenate of lead to 150 gal. water has proved effectual.