170 TEACH LEAF CURL: ITS NATURE AND TREATMENT. 



Brass suction pipe strainers for attachment to the end of the pipe 

 ma}^ be had of different forms. The}'^ are necessary when the end of 

 the suction pipe is simpl}^ lowered into the spray tank or when it rests 

 upon the bottom of the tank. 



The extension pipes used by different growers var}'. Some adopt 

 common three-eighths or one-fourth inch iron tubing, while others 

 obtain the bamboo-covered extensions, which latter contain one-fourth 

 inch pipe. The essentials of an extension pipe are a brass coupling for 

 connecting the hose, a good brass stopcock for controlling the flow of 

 spray, a metallic pipe of sufficient length (which should ])e determined 

 by the height of the trees to be sprayed), and upon the end of the pipe 

 a thread and shoulder for the attachment of the nozzle and the recep- 

 tion of a washer. The ordinary length of extension pipes is 8 or 10 feet, 

 but where trees are large a 12-foot pipe may be needed. Either of 

 these lengths are now obtainable from dealers in spraying supplies 

 in the form of bamboo extensions (fig. 5). There are advantages in 

 the bamboo extension pipes over uncovered iron tubing. Where hot 

 sulphur sprays are used the bamboo cover prevents the hands from 

 feeling the heat, and where cold sprays are applied in very cold weather 

 the bare, wet pipe is liable to chill or even freeze to the hand. The 

 greater size of the extension pipe which is covered by bamboo also 

 adds to the ease with which the pipe may be held and turned in the 

 hands. 



PROTECTION OF THE SPRAYER. 



The nature of spray work makes it unpleasant for the workman, but 

 much of this inconvenience arises from an incomplete or improper 

 preparation for the work. Men who would not care to work in a 

 rain storm without suitable covering are often improperly protected 

 against the similar or worse conditions prevailing when they are spray- 

 ing. In the spraying of large orchards it has been learned that one of 

 the most suitable coverings for men who are applying spraj^s is a sail- 

 or's oilskin suit and sou'wester. This covering is light, impervious to 

 wind and water, and is not as liable to crack as rubber clothing. What- 

 ever form of head covering maj'^ be chosen it should be soft, so as not 

 to be interfered with by limbs, and it should extend in front to pro- 

 tect the eyes and behind to protect the neck. It is always desirable to 

 protect the hands with long rubber gloves, and these can usually be 

 obtained from or through druggists. In selecting such goods, how- 

 ever, it is well to learn how long they have been held in stock by the 

 dealer, and if they have been kept for more than a year it is best to 

 order new ones from the manufacturer, as such goods soon rot when 

 held in stock. Besides, new stock is no more expensive than old, and 

 it will frequently endure twice as much use. Numbers 11 or 12 are 

 usually about the right sizes for ordinar}^ hands. Most wear can be 



