GOOSEBERRY AND IVY RED SPIDER. 69 



With regard to washes, the Kerosine Emulsion appears to stand 

 first of all on the widespread evidence of its success in the United 

 States for this kind of infestation. We have also observation of it 

 being useful in this country for clearing off this Spider, or Mite, 

 especially when the spray or wash is applied warm (see pp. 65, 66). 



The Anti-pest of Messrs. Morris & Little, Doncaster, and Mr. 

 Stott's application sold under the name of Kill'mright, are both ser- 

 viceable, but I incline most to the former, as its composition much 

 resembles that of the Kerosine Emulsion, only (as observed at p. 65) 

 there is not the same difficulty in mixing it. But probably many soft- 

 soap mixtures are useful, and, amongst others, the " Soap and Sulphur 

 Compound " of the Chiswick Soap Co., Chiswick, Middlesex. 



For distribution of sprays, the Knapsack Punp, or "Eclair" 

 Sprayer,* appears to answer very well, excepting that I had complaint 

 in some cases of the oily matter of the soap mixture dissolving the 

 material of the collars, so that they got out of order. Kelatively to 

 this point. Sir J. Stewart Eichardson, who had reported tne excellent 

 success of the Anti-pest applied by means of the Knapsack Sprayer, 

 remarked : — " My gardener found that after using the spray pump for 

 some time that it lost its power, so he took it to pieces, and found the 

 india-rubber collar and valves in a sort of consistency like putty ; so 

 he got a sheet of rubber and made new ones, whereupon the pump 

 worked as well as ever." 



This rearrangement would probably make all right for home use 

 on a moderate scale of work. For more severe work, I believe that 

 collars and washers, which were originated by Mr. Nixon, of Great 

 Eversden, near Cambridge, and sold by him at threepence apiece, 

 answer quite well. These are not made of india-rubber, but of a 

 material which is not acted on by either oils or acids. 



These rearrangements would keep all in order, even if the difficulty 

 still exists ; but as I was informed that negotiations were in progress 

 some time ago with Mons. Vermorel, whose Knapsack Sprayers are 

 imported into this country by Messrs. Clark & Son (see previous note), 

 relatively to altering this point, very possibly there is now no difficulty 

 on this head, and certainly all information would be given by Messrs. 

 Clark. 



Other means of lessening the amount of the Gooseberry Eed Spider 

 lie in cleaning and scraping rough bark (especially during winter), so 

 as to remove shelters for these Mites or their eggs, also in pruning off 

 as much rough wood as could be spared ; and running soft-soap into 

 angles between the branches would also be of use. But though the 



* Procurable from Messrs. Chas. Clark & Co., Windsor Chambers, Great St. 

 Helen's, London, E.C. 



