IKJtTRIOttS INSECTS AKD 



injury in sufficient quantities to destroy any insects that 

 feed by biting or chewing the parts. Samples containing 

 more than four per cent of soluble arsenious acid should be 

 used with considerable caution. 



DRY PARIS GREEX. In the powdered form it is applied 

 with a sieve, a fine cloth bag on a pole or stick, with the 

 common sulphur bellows or some of the numerous machines 

 or " guns " that will distribute it upon the surface of the 

 foliage in very minute quantities. The principal difficulty, 

 however, found in applying it in this manner is in dis- 

 tributing it in sufficiently minute quantities not to injure 

 the foliage and in making it adhere to the foliage. To 

 overcome these difficulties it is extended or diluted in 

 some way, as with air-slaked lime, plaster, cheap flour, 

 glucose, etc. The best results are obtained by making the 

 application when the foliage is wet with rain or dew. 



PARIS GREEX AXD PLASTER, LIME, OR FLOUR. In 

 order to distribute Paris green more thoroughly and 

 economically in a dry form it is often mixed at the rate 

 of 1 Ib. to 10 up to 50 Ibs. of plaster or air-slaked lime or 

 with from 10 to 20 Ibs. of fine dry cheap flour. All of 

 these substances possess some merit, but the two first are 

 nearly as readily washed off by rains as the Paris green 

 itself, while the latter when once moistened foms a paste 

 that upon drying will remain on the foliage \tt a long lime. 



PARIS GREEX ix WATER. ^>y far tbrbest method of 

 applying this poison is mixed witl^vater and applied 

 with a nozzle that will make a verv^ine spray or mist. In 

 this way it is more evenly distributed over the foliage or 



other parts, adheres be tj_i i nn<Jr I is used in the water 



there will bajatrClTless danger: from injury than if used in 

 the dry form. 



