150 
land-plaster, or air-slaked lime in the proportion of one pound of 
the poison to twenty-five pounds of flour or to fifty pounds of land- 
plaster or lime. 
Apply thoroly and evenly with a hand "dust-sprayer" early in 
the morning, when the dew is on the plants. 
Paris Green — Liquid Spray 
For inula 
Paris green i pound 
Unslaked lime i K' pounds 
Water 1 50 gallons 
Slake the lime and add the Paris green, thoroly mixing before 
adding the water. The mixture must be kept well stirred w^hile it is 
being sprayed, and most spray-pumps have an attachment for this 
purpose. The liquid spray is safer and more efficient than either of 
the dry mixtures previously mentioned. 
Arsenate of Lead 
Arsenate of lead can be made by properly combining lead acetate 
and arsenate of soda, but it is difficult to make a good grade of it, 
and unless large quantities are needed it is best to purchase standard 
brands, which are ready for use when dissolved in water. 
The price of arsenate of lead is less than that of Paris green, but 
as one must use two to three times as much of it to secure a desired 
result, it is slightly more expensive as an insecticide than Paris 
green. This fact is offset, however, by the following advantages 
which arsenate of lead has over all other arsenicals : it is much more 
ci.dhesive, remaining on the foliage for a period during which two or 
three sprayings with Paris green would be necessarv: it remains in 
suspension better; it shows on the foliage; and it is harmless to vege- 
tation, this last fact being of .special advantage when the more ten- 
der plants are sprayed. 
Care should be taken to obtain a good grade, for there are manv 
worthless brands on the market. Usually a good grade can be ob- 
tained from any reliable wholesale druggist. As the strengths of 
the various brands differ, the gardener should follow the directions 
accompanying the arsenate he is to use. 
Resin-Lime Mixture 
'J'he resin-lime mixture serves as a stock solution to which poi- 
sons may be added. It is valuable chiefly because of its adhesive 
properties, being for this reason well suited to smooth leaves, such 
as those of the cabbage. It has the disadvantage, however, that con- 
siderable time is necessai-y for its preparation, and that it is especially 
liable to clog the spray-nozzle. It is prepared as follows. 
