2 7 
fallen, do not wait for them if some of the calces are clos¬ 
ing. If the trees do not all bloom nearly together, spray 
the early blooming trees first and then in a few days spray 
the others. Repeat the application in one week, or, at the 
latest, ten days. 
HOW TO SPRAY. 
Be thorough with the work. It will take more time and 
material, but if spraying for this insect will pay at all it will 
pay best to do the work well. Use a nozzle that throws a 
medium fine spray, not a mist, and direct it so that the 
liquid will be thrown into every blossom or calx. A misty 
spray will not carry as well into the blossoms. To make a 
thorough application, it will be necessary to direct the spray 
from, at least, two sides of the tree, and if the tree is large, 
it will be almost necessary to apply from all four sides. In 
many orchards the trees are so closely set, so large, and 
poorly pruned, that it is impossible to make a thoroughly 
good treatment for the destruction of codling moth larvae. 
The one who directs the nozzle for the spraying will 
find it a great advantage to be elevated as high as the bed 
of a wagon box at least. If the trees are large, it will be 
well to use a step-ladder or a dry goods box in the wagon 
to elevate him still more. 
NUMBER OF APPLICATIONS. 
Orchardists differ widely in opinion as to the number 
of applications that should be made. Some, noticing that 
the worms are most abundant late in the summer, think 
that spraying should be continued throughout the season of 
growth and report excellent results from spraying five or 
six or more times. However, it is the opinion of those who 
have tested the matter most thoroughly at the various 
experiment stations of the country that it does not pay to 
spray more than twice, if the two applications are properly 
made at the best time. 
POISON TO USE. 
Here again opinions differ. Probably Paris green is as 
effectual as any if well- applied and if the liquid is kept 
thoroughly agitated during the spraying. Scheele’s green 
would probably be as effectual as Paris green, is cheaper, 
and remains in suspension in water better. London purple 
and arsenate of lime are readily kept in suspension in water 
but are slower in their action than the above mentioned 
