70 EXPERIMENT STATION RECORD. 



the apples, causing - them to become withered and deformed. The 

 author points out the distinctive characteristics of the insect and then 

 proceeds to consider the remedies. Jarring the trees and spraying 

 with arsenates are recommended. 



The cottonwood leaf beetle at Liverpool, New York ( pp. 554, 558). — 

 In 1804 a report was received that the basket- willow industry in the 

 vicinity of this town was suffering serious injury from this beetle. One 

 willow grower, whose farm yielded him usually $2,000 worth of willows 

 annually, reported a yield of only -$200 worth in 1804, attributed partly 

 to the dry weather of the previous year, but mostly to injuries from this 

 beetle. 



The insects are first noticed from May 20 to June 1, or at a time 

 when the willows are getting a start for the summer's growth. They 

 feed on the leaves to a certain extent, but seem to prefer the tender 

 growth of the tips of the willows. This sort of injury causes the wil- 

 low to throw out branches, which ruin it for market purposes. 



As remedies, London purple, Paris green, and arsenate of lead, as well 

 as catching and killing the beetles and larva;, are recommended. One 

 lb. of Paris green to 150 gal. of water is thought sufficient for this insect. 

 To prevent burning the foliage by the free arsenic in the water, it is 

 recommended that lime in the form of milk of lime be added to the 

 mixture. To cause the Paris green to adhere to the smooth surface of 

 the willow leaf, the addition of glucose or molasses at the rate of 1 qt. 

 to 150 gal. of water is thought advisable. This insect was also found 

 in Powell County, where it was attacking Carolina poplars and threat- 

 ening their ruin. At the same place Norway poplars were also attacked. 



The com worm (Heliothis armigera) (pp. 559-565). — A popular account 

 is given of this insect. The author mentions the subject of its distribu- 

 tion, its destructiveness in the United States; considers the life history 

 and habits of the insect as a corn and tomato pest; briefly describes the 

 moth and the appearance of the infested ears of corn, and discusses 

 remedies. Fall plowing is highly recommended as the most practical 

 remedy in the North. Paris green, London purple, and kerosene emul- 

 sion are recommended as remedies that have been tested. Trap lights, 

 attracting and destroying moths by poisoned sweets, are mentioned as 

 doubtful remedial measures. 



The striped cucumber beetle (Diabrotica vittata) (pp. 506-573). — This 

 insect is said to be much dreaded in some portions of the State where 

 cucumbers, melons, and squashes are extensively grown — as, for exam- 

 ple, on Long Island, where these crops are very important. A letter 

 from Jerico, Long Island, is quoted as follows: 



"This beetle is quite discouraging to the growers of early pickles or cucumbers. 

 Half- grown vines ;i a they begin to produce fruit die here and there, and in most 

 pickle fields the vines also appear to lie injured as a result of an attack upon the 

 roots. This last evil threatens to ruin the industry. It has moved the western 

 limit of successful pickle growing from tho immediate vicinity of Jamaica to 

 Westbury in 25 years (a distance of over 11^ miles)." 



