The Canadian Horticulturist 



247 



BOOK ON (;ardenl\g.. 



No. 477. 



Sir, —Could vou tell me where I could ol>taiii a book on the cultivation of flowers. It 



must, as nearly as possible, comply with the following conditions, viz. : Give the bol 

 cal and ordinary name of each plant. Why so called. Its orii,'in. State whether it is ah 



Give the botani- 



ouse 



Watering. Flower- 



plant or an outdoor plant. Soil in which the l)est results will be given 

 ing and resting periods. How propagated. Sunshine or shade, etc. 



D. J. McCakthy, Norwood, Out. 



The only book we know of which fully answers the needs of our correspon- 

 dent, is the "Illustrated Dictionary of Gardening," which gives information 

 about all the flowering and foliage plants for the open garden, ferns, palms, 

 orchids, cacti, and other succulents ; green house and stove-plants, bulbs, trees, 

 shrubs, fruits, herbs, vegetables, etc. No pains nor expense have been spared 

 in preparing this work which is an authority on horticulture. It is published 

 complete in four volumes, cloth, gilt edges, with colored plates, for $20.00. 



Mr. E. E. Rexford, a well-known American florist, has published a smaller 

 treatise on floriculture, which is exceedingly valuable as a practical guide. The 

 title is " Home Floriculture," and the price is $1.50 post paid. Any of these 

 books may be ordered through this office. 



GRAPE VINE BARK LOUSE. 

 No. 478. 



Sir,— I enclose a cutting from my grape vines to which my attention was drawn on 

 account of the large number of ants frequenting it and also by the yellow color of the 

 leaves. A large part of the vine is covered with black exci'esceuces, and I would like to 

 know what they are, also the cause, the remedy, and the result if not 

 attended to. If you can do this in the next number of the Canadian 

 H0KTICULTURI.ST, others besides myself would be glad. 



Geo. Hallen, Oakville, Ont. 



The excrescences referred to by our correspondent have 

 very little appearance of life, and yet they are really the shell 

 of an old mother louse, protecting a large number of its eggs. 

 Fig. 58 represents them very clearly ; the whitish, cottony 

 substance which protrudes from them protects the eggs, from 

 which, early in July, there issues numerous young, yellowish- 

 white lice. These distribute themselves over the branches 

 of the grape vines, and soon attach themselves to it, and 

 remain in one spot for the rest of their lives, sucking the 

 juices. They are not usually found in any great abundance. 

 They should be scraped off with a knife and destroyed. Scrub- 

 bing the young wood with a cloth or brush charged with kero- -> \ttiti^ 

 sene emulsion, would perhaps be a still better remedy. yig. 5S. 



