346 OF INSECTS, &c. 



were from Mr. Swinton's nursery, and all infected 

 with these insects. The Doctor gave me twelve 

 of these trees, which I planted, and very soon 

 cleared them of the Coccus. 



Messrs. Lee and Kennedy, Nurserymen at the 

 Vineyard, Hammersmith, Messrs. GrimwoodandCo. 

 Kensington, and Messrs. Gray and Wear, at Bromp- 

 ton-Park Nursery, have applied train-oil, laid on with 

 a painter's brush, with a view of destroying these 

 insects, but they have not been successful. * In- 

 deed, I by no means approve of applying oil to 

 trees upon any account, as by shutting up the 

 pores, it is apt to render them bark-bound. 



Of Caterpillars. 



Caterpillars are very destructive to Cabbages, 

 and all the Brassica tribe, and frequently make 

 depredations on trees, particularly the Apricot. 

 They should, therefore be carefully observed and 

 picked off. A few years ago, Kensington gardens 



* Since writing the above I have been informed, that the 

 farmers in Kent lil<:evvise use train-oil ; but if they would make 

 a fair trial of urine and soap-suds, they would find it more 

 effectual, and it would cost nothing but labour ; besides, what 

 falls on the borders will make a fine manure. The urine and 

 soap-suds should be saved in tubs in Winter ; and, as it will be 

 too strong for use in Summer, it may be lowered by adding water. 

 This mixture will also be found efiectual in killing slugs that 

 harbour about the roots of the trees and bottoms of the walls. 

 When it soaks into the ground, the slugs will work their way 

 out, and may easily be killed by throwing a little more of the 

 mixture on them from a watering-pot with a rose. 



