AMERICAN BLIGHT. 4] 



4r 



a fluid containing one part of the compound to 8 of 

 water; but he appears to recommend a stronger solution 

 viz., 1 to 6 for contending with the pest when it affects 

 the roots. To mix the " Resin Compound," take 3 Ibs. of 

 caustic soda and 4 Ibs. of resin, dissolve in 3 pints of water 

 over fire ; when properly dissolved, add water slowly while 

 boiling to make 36 pints. One part of the compound to 

 4 parts of water, or a mixture no stronger than such as 

 contains 3 parts of the compound to 8 parts of water, 

 would in all probability be found to be effective as a fluid 

 for use with the spray. 



These are the best known remedies, and, if properly 

 applied, seldom fail. In kerosene we have a powerful 

 auxiliary in enabling us to keep down insect pests of most 

 kinds. 



Before treating the branches or upper part of an 

 apple tree, thin out all superfluous wood, as by this 

 means the spraying material can be made to go much 

 further, and the result will be, or ought to be, much more 

 satisfactory. 



Before leaving the matter of the affected roots of the 

 apple tree, I may be permitted to make mention of a trial, 

 at which I was present, of the use of Peruvian Guano, 

 applied to the roots of the tree, the surface soil having 

 been previously bared. The effect of this test proved 

 the thorough efficacy of the guano, and a repetition of it 

 is, I think, worthy of further investigation. 



In spraying the branches, the material may be used in 

 a more diluted form, but, when trees are grafted on 

 ordinary stocks, and the roots have become rotten by 

 reason of neglect, coupled with the attacks of the 

 " Woolly Aphis," it would be better to take them out at 

 once and destroy them. There are many other so-called 

 remedies against the attacks of the apple-blight, but the 

 few here given will, it is hoped, be quite sufficient for the 

 purpose. 



Appended is a list of those varieties of apples which are 

 not susceptible to blight. I am indebted to Mr. Geo. 

 Neilson, the well-known curator of the Royal Horticultural 



