412 MISSOURI STATE HORTICULTURAL SOCIETY. 



S. Hewitt was a rosy country lad, whose garments were made by the 

 village seamstress when he first went to New York. The list might 

 be continued indefinitely. 



BULLETIN NO. 53, MICHIGAN EXPERIMENT STATION. 



Spraying tcith the Arsenites. By A. F. Cook. P. 8. 



Professor Cook has varying results with spraying for the curculio. 

 He finds that the insect is destroyed when rains are infrequent, but 

 frequent showers wash the poison from the smooth fruits. He finds 

 carbolized plaster a good remedy also, under like conditions. This is 

 prepared by stirring one pint of crude carbolic acid in fifty pounds of 

 plaster. This powder is thrown freely over the trees. Professor Cook 

 makes the following conclusions : " The arsenites and carbolized plas- 

 ter will protect against the plum curcalio if they can be kept on the 

 tree or fruit. But in case of very frequent rains the jarring method 

 will not only be cheaper, but much more effective. Again, as our wild 

 fruits are more cleared away we must have plums in our orchards to 

 protect the apples from the curculio. When apples are seriously stung 

 they become so gnarled and deformed as to be worthless. It will pay, 

 then, to set plum trees near by or among the apple trees. Then we will 

 escape mischief among our apples from the curculio, and will only need 

 to spray our apples once to destroy the codling moth, and can treat the 

 plum trees three or four times with Paris green or carbolated lime in 

 case we have only occasional showers, or can jar the trees when the 

 rains are very frequent. For the apples we can use London purple, one 

 pound to 200 gallons of water. For the plums we must use Paris green r 

 one pound to two or three hundred gallons of water. " We suggest to 

 Professor Cook that he add kerosene emulsion to the arseiiite mixture 

 to increase its adhesiveness. 



Great injury to foliage has been reported from many parts of the 

 country from the use of London purple, particularly upon the peach. 

 Professor Cook made many experiments to determine the cost of this 

 injury, and his conclusions are these : " London purple is more injurious 

 to the foliage than is Paris green ; and white arsenic — arsenious acid — 

 is more harmful than is either London purple or Paris green. This is 

 doubtless owing to the soluble arsenic which is quite abundant in Lon- 

 don purple, and almost absent in Paris green." 2. " Peach foliage is 

 especially susceptible to injury, and cherry foliage the least so of any 

 of the kinds treated. " 3. " It would seem that London purple and 

 white arsenic, used just before a rain, are more harmful than when used 



