CODLIN MOTH. 15 



worms, and at the same time not injure or kill the foliage 

 during ordinary weather at this time of year." — L. B. (From 

 ' Nebraska State Horticultural Report for 1894.') 



The above extract gives date of application, but (to ourselves) 

 not precise proportion save to those acquainted with the capa- 

 city of the U.S.A. " barrel." But reports from trustworthy ex- 

 perimenters name one pound of poison to a hundred and sixty 

 to two hundred gallons of water as safe and serviceable. 



Prof. F. M. Webster, of Purdue University, U.S.A., also a 

 thoroughly trustworthy authority, recommended Paris-green, 

 sprayed as a liquid mixture, as a good remedy. " Used in 

 this form, one pound of the poison to one hundred and forty 

 or fifty gallons of water, if applied in the form of a spray, by 

 the aid of any of the machines mentioned, . . . will be found 

 effective against the Codlin Moth."— (F. M. W.) 



In our English experiments, for spraying Apple trees as a 

 remedy for caterpillar, one ounce of Paris-green to twenty 

 gallons of water was found sufficient. But in all cases where 

 the operators are not accustomed to the use of arsenical 

 poisons, careful experiment should be made as to w^hat 

 strength can be borne, before spraying on a large scale. 



The Paris-green is j)rocurable from Messrs. Blundell and 

 Spence, Hull, more finely ground than the ordinary powder, 

 and in a slightly damped condition ; in this condition it 

 is safer for use, as the powder does not fly about, and is 

 therefore not so liable to be prejudicially inhaled by the 

 mixer. Also a smaller quantity is required ; if the same 

 proportion of this prepared Paris-green is used as of the 

 ordinary powder, great damage is likely to ensue. Paris- 

 green is sometimes known in the shops as Emerald-green. 



It must be remembered, as was brought forward when the 

 use of Paris-green was introduced into England by our 

 Evesham Committee of Experiment in 1890, that this aceto- 

 arsenite of copper is jioisonous, and therefore should be kept 

 safely out of the way of children or careless people. 



Details of method of application are now fully before the 

 public, but the main points will be found under heading of 

 "Paris-green"; and for those who wish to have special ob- 

 servations on methods of applying the arsenite, and also 

 precautions in its use, I may mention that I should be 

 happy to forward gratuitously to applicants coi^ies of my own 

 eight-page pamphlet on this subject. 



The kinds of sj^rayers, whether as knapsack or hand or 

 horse machines, are being so constantly improved, and they 

 are in such numbers before the public, that it is unnecessary 

 to enter on them here. 



Our really available remedies against this infestation appear 



