155 
Lye-Sulphur Wash 
This contact spray is said to have particular value against the 
red spider. It is prepared by mixing five pounds of flowers of sul- 
phur with cold water and then adding to this sulphur paste tw^o and 
a half pounds of pulverized caustic soda. Water is added from time 
to time, to prevent burning, until a concentrated solution of five 
gallons is obtained. One gallon of this stock solution is sufficient for 
25 gallons of spray. 
Poisoned Bran Mash 
Bran 16 pounds 
Paris green i pound 
Slightly dampen the bran and add the Paris green, mixing until 
every particle of the bran bears some of the poison. The bran should 
be barely wet enough to make the powder adhere to it, as experi- 
ments in greenhouses strongly indicate that a soggy mash is not 
freely eaten by cutworms. A little salt in the water used is said to 
give the mixture additional relish. 
Poisoned Lettuce or Clover Leaves 
Small lots of lettuce or clover are poisoned with Paris green, 
either dry or suspended in water, and the poisoned vegetation is 
then cut or mowed and scattered over the infested tract (see page 
131). This and the poisoned bran mash seem to be about equally 
effective. 
Carbolic Acid and Lime 
A coating of the soil at the base of the plants with carbolic acid 
and lime has been recommended by Dr. John B. Smith * as "the most 
effective material tested" in his experiments against the onion-mag- 
got in New Jersey. "f" To make the mixture, slake three pints of lump 
lime in a gallon of water, and add one tablespoonful of crude carbolic 
acid. When applied properly along the rows with a sprinkling-can 
or spray-nozzle, a thin crust will form on the ground around the 
plants, which is said to serve the same purpose as the tarred felt- 
paper protectors described on page no. 
Tobacco Dust 
Tobacco dust has been recommended as a useful repellent , par- 
ticularly against such insects as root-maggots and cucumber-beetles. 
It has the further advantage of serving as a contact insecticide and 
*The Cabbage and Onion Maggots. Bull. N. J. Agr. Exper. Station, No. 200 
(Feb. 12, 1907), pp. 16-19. 
tFor reference to our own experience with it see page no. 
