- 466 - 
RAMSAY, A. A- (2017) 
1923. A HOME-MADE TOBACCO tfASH FOR COMBINED SPRAYS. Agr. Gazette 
New South Wales 34(1): 58-60. 
A home-made tobacco wash was prepared to take the place of 
"Black Leaf 40". Hitherto the home-made tobacco extracts, when used 
alone, have "been satisfactory, but when combined with other sprays, 
trouble has arisen. A home-made infusion, prepared by using the 
following formula, should not be heated, and it combines with lime- 
sulphur without any change taking place: 2 lb. waste tobacco (dust), 
3 gal. cold water, and 7 oz. quicklime. Other details are also given 
Against leaf-eating and scale insects, and aphid s and mites 
on deciduous fruit trees in Australia the following treble -purpose 
spray is recommended: Lime-sulphur (winter strength) 1 to 10, home- 
made tobacco wash (l lb. tobacco waste to 3 gal. water), and lead 
arsenate 2 lb . to 50 gal. water.' 
WARDLE, R. A., and BUCKLE, P. (2018) 
1923. THE PRINCIPLES OF INSECT CONTROL. New York, pp. 16 and 295, 
illus. 
Various nicotine preparations, including nicotine sulphate, 
tobacco stalks and leaves, tobacco juice, nicotine extract, Black Leaf, 
Black Leaf 40, and Nico-fume, are briefly discussed, and a few refcrenc* 
are cited (pp. 98-101). Combination insecticides (pp. 115-117), clips 
and dressings (pp. 118-121), sulphur dips with tobacco infusion (pp. 12' 
129), nicotine dips ( p. 129), and fumigants (pp. 145, 158*159), all of 
which deal with nicotine, are briefly described. 
In regard to the dips and dressings, tobacco infusion is one of 
the dressings to combat biting lice on horses. A French remedy against 
demodectic mange includes a titrated nicotine extract. 
Sulphur dips, meant to cure sheep-scab, are of four kinds, the 
sulphur being combined with lime, caustic soda, alkaline carbonate, and 
tobacco. The nicotine dips may be prepared by using either 40 percent 
nicotine solution or tobacco infusion. Nicotine, when uscd t as a fumigaJ 
is often combined with sawdust, moulded into cones, and then slowly bur- 
in France, trees covered with bag tents, have been fumigated as follows; 
A ball of wood shavings about 8 in. in diameter is soaked in 3.5 
to 5 oz. crude tobacco juice, and suspended in a wire basket in a cover 
tree with a piece of tow to act as a wick. The tow is ignited and a 
10 minutes' exposure is allowed. 
DE 9NG, E. R. (2019) 
1924. THE RELATION BETWEEN VOLATILITY AND TOXICITY OF NICOTINE. Scien< 
60(1540): 15-16. 
