1046 THE BOOK OF GARDENING. 



Several fungoid diseases affect the Strawberry, one of the 

 commonest being the Leaf-Spot {Sphce7'ella fragarice). The 

 common name gives a clue to the chief characteristic of the 

 disease — the spots on the foliage. These occur on the upper 

 surface, and increase in size and colour as the different stages 

 are reached ; usually they coalesce. They are at first dark 

 purplish ; then the central portion lightens until it is nearly 

 white, and the blotches by this time are of large size, and 

 practically the whole leaf-surface is discoloured. When this is 

 the case, the foliage is shed, and in very bad cases the plants 

 die. In America the somewhat heroic treatment of mowing the 

 plantation after the crop has been gathered, and then firing the 

 tops by the aid of straw, is adopted ; but the remedy when 

 suggested here was regarded as worse than the disease. There 

 seems, however, to be little doubt as to its efficacy, and it is 

 well worthy of a trial, followed the next season by spraying with 

 Bordeaux Mixture. In America the disease is called the Straw- 

 berry Leaf Blight, and those who would like to peep farther into 

 its life-history should read Prof. Scribner's article in the Report 

 of the United States Department of Agriculture. 



Vines. — See "Grapes." 



Walnuts. 



In the Open. — Almost all soils will grow Walnuts. Unfortu- 

 nately our ancestors did not always plant the best varieties, as 

 some of the large trees about the country produce nuts of small 

 size, with very thick, hard shells. Noyer a Bijou is a variety with 

 large nuts, having thin shells, and of good flavour. Thin-shelled 

 is another fine sort, and a heavy cropper ; Franquette is also 

 excellent on deep, warm soils. All the above develop into large 

 and beautiful trees ; but if a small-growing Walnut is desired. 

 Dwarf Prolific will supply the need, for, as its name indicates, 

 it is dwarf and prolific, and makes a fruitful bush. , 



Lackfa' Moth. 



