10 



and lime. The second cask is used for stirring together the two 

 mixtures, and the third cask for the attachment of the pump. 



In the use of the Bordeaux mixture the liquid must be strained 

 thoroughly, a cloth strainer being put over the barrel when the lime 

 and the copper mixtures are poured together, and then again strained 

 when poured into the pump cask. 



CAUTION. 



Animals should not be allowed under the trees or vines for a short 

 time after the use of the Paris green mixture, although no proof has 

 ever been found that they would be injured unless an unnecessary 

 amount of the mixture was used. Chickens and young poultry 

 might be injured by picking up the particles of lime and Paris green, 

 but grown poultry have received no injury when allowed to run in the 

 college vineyard and orchard where the trees were sprayed with the 

 above mixtures, and the trunks painted with Portland cement and 

 Paris green. 



Paris green and all other arsenites should be kept out of the reach 

 of children, irresponsible persons, and domestic animals. 



We would advise the trial of the mixtures, on a small scale, if a 

 larger amount of Paris green is used than is here recommended. 

 We believe, however, that more frequent applications will give better 

 results than an increased strength of the mixture. 



NOTICE TO EXPERIMENTERS. 



No experiment will be of any value unless some trees or vines of 

 the same kind and in the same condition are left untreated, as check 

 trees. Two or three trees under each treatment, a few grape vines, 

 one or two rows of strawberries or potatoes, untreated will be suffi- 

 cient, but such checks must be provided or it will be impossible to 

 judge of the value of any application. 



The season is advancing so rapidly that if the buds have burst 

 and the leaves begin to show, use only the Bordeaux mixture for the 

 first application. While it is not positively known that the sulphate 

 of Copper and iron solutions will injure the foliage at this stage it is 

 best to be on the safe side and use only the Bordeaux mixture 

 which is certainly harmless, using the two other solutions on a few 

 trees or vines only. 



The top branches of high trees are best reached by using longer 

 hose and fastening the nozzel at an angle of about 45^ to a light pole 

 10 or 12 feet long, winding the hose around the pole a few times to 

 better enable the operator to get around with it. 



