9 
tion, and at the same time wets the beds but little. It is also very useful for 
violets, as with a pressure of 35 to 40 pounds the leaves of the plant can be 
readily turned over and thoroughly washed without soaking the crowns and the 
bed. In spraying some plants, particularly violets, it has been found advyan- 
tageous to use a lance 18 inches long, made of a piece of one-half-inch brass 
pipe. This increases the reach,.and enables the operator to place the water to 
better advantage on plants which under ordinary conditions would be beyond 
arm’s length. The apparatus can be made for 50 cents, and will be found a 
useful instrument wherever there is sufficient water pressure to insure a proper 
amount of force. 
The illustration here presented (fig. 4) shows the general appear- 
ance of this tip and nozzle. The nozzle consists of a casting turned to 
the desired length and flattened at the end as figured. Through this 
flattened end a narrow slit is made, which should be absolutely true 
throughout, so that the water as it issues will be broken up into 
streams. It is even sometimes necessary to file the tips as they come 
from the factory, to secure the desired result. 
TREATMENT OF TREES AND SHRUBS. 
The methods of control which have been 
advised above are especially adapted to the 
treatment of greenhouses infested by the 
spider. All of the insecticides which have 
been recommended for indoor use are also 
applicable to trees and shrubs, the list in- 
cluding sulphur, which may be applied in 
the form of a powder by means of a pow- 
der bellows, or mixed with water as 
previously prescribed, or combined with 
lye or lime. Soap solutions, kerosene 
emulsion, and cold watér may be used with [F'6- 4.—Nozzle and tip for 
3 ee greenhouse use. Reduced. 
profit. Resin wash and lime-sulphur are 
also used as for the orange mites or red spiders. Of these the lye- 
sulphur mixture is probably the best, as it is successfully used against 
these pests in California. 
The sulphur treatment has an advantage, in that it adheres more 
closely to the leaves than other preparations which have been men- 
tioned and kills young mites coming in contact with it as soon as 
they are hatched. Sulphur preparations are also of value in eradi- 
cating scale-insects which might be present at the same time; in fact, 
when the sulphur is being applied for scale-insects, red spiders or 
mites are likewise killed. 
TREATMENT OF TRUCK AND GARDEN PLANTS. 
In the treatment of truck crops infested by the red spider, little 
variation from the methods already advised for greenhouse work 
need be practiced. The same applies to ornamental flowering plants 
[Cir. 104] 
