The Canadian Horticulturist. 285 



White Horned Maple Borer. 



§58. Sir, — The fly I enclose I found on a maple tree, and, as the few we have are 

 nearly killed by some insect, I thought this might be the one. It seems to be a kind of 

 borer. I used to find little emptj^ cases same as the one sent, sticking out of the bark, and 

 mv father cut out many of the maggots from under the bark last year. Is there any 

 remedy to preser^-e the trees from dying ? 



Mrs. Tobin-, Fergus, Ont. 



Reply by Mr. James Fletcher. 



The fly-like insect which Mrs. Tobin has found destroying her maple leaves 

 belongs to the Horn Tail family and is known as the White-horned Maple 

 borer. The only remedy which can be suggested for this insect is washing the 

 trees with an alkaline wash, the same as is done for borers in apple and other 

 fruit trees. In this way the female will be prevented from depositing eggs upon 

 the bark. * 



The Foup-lined Leaf-bug. 



8>9. Sir, — I send you samples of black and green insect, found on my Datura ; it 

 also did much harm to my pansy blossoms. 



Mrs. F. Tobin, Fergus, Ont. 



Reply by /as. Fletcher, Entomologist, Central Experimental Farm, Ottawa. 



The insects complained of by Mrs Tobin, of Fergus, are, No. i, "a green 

 and black bug," found on her datura, which it punctured and destroyed the appear- 

 ance of by making a large number of dark spots on the leaves and flowers, and 

 which Mrs. Tobin says also injured her pansy blossoms last year. It is the 

 Four-lined Leaf-bug, which is figured and described in the Experimental Farms' 

 Report for 1893, page 181. The only way to treat these insects is to dust the 

 plants with Pyrethrum powder at the time the young bugs make their appear- 

 ance. Mr. Slingerland made the important discovery that this insect passes the 

 winter in the egg state. The eggs being embedded in the tips of the branches 

 of currants and other shrubs. He says, on bushes which have been infested 

 this year the egg scars can soon be found duriftg the winter, as the whitish tips 

 of the eggs are quite conspicuous. The eggs remain in the tips of the twigs for 

 nine months, making it practical to prune during winter months when other 

 work is not pressing. 



Ippigated Fruit Farms. 



860. Sir, — Are there any fruit farms successfully irrigated in this Province? I 

 want to try it by use of a hydraulic ram. 



H. Picket, Ciarhson, Ont. 



We know of no such instance. Some fruit gardens have been fairly well 

 irrigated with windmill power about Grimsby. We shall be pleased to hear 

 from any one who has tried irrigation on a larger scale. 



