270 TREATISE ON THE CULTURE AND 



It would be neceffary to have feparate divifions in the cafe 

 for each different fpecies, and to put fome earth in the bottom 

 of each divifion, which fhould be moiftened occafionaliy, as 

 fome of them bury themfelves in their chryfalis ftate, while 

 others adhere to walls, gates, or palings. 



Frefh leaves fhould frequently be put in, and the box or 

 cafe covered with a piece of fine canvas, or gauze, to admit 

 the frefh air. 



At the fame time that the trees are cleared of the coccus, 

 aphis, or any other infects, the caterpillars fhould be carefully 

 looked for and picked off. You will obferve, that they 

 lhelter themfelves at the ends of the (hoots, in the flowers, 

 and at the bottom of the footftalks of the flowers. There are 

 two or three forts that infeft fruit trees, two of a brown and 

 one of a green colour. Four years ago the Apple-trees 

 fuffered very much by a blight ; they had ail the leaves eaten 

 off, and, of courfe, bore no fruit. I firft had all the cater- 

 pillars carefully picked off : I then cut out the cankered wood, 

 and wafhed the trees with a mixture of urine, foap-fuds, and 

 frefh cow-dung, fufficient to bring it to the confidence of 

 paint, laying it on all over the items and branches of the 

 trees, particularly where the decayed parts were cut out : 

 after this, the trees recovered in a manner that furprifed every 

 one who faw them ; and they ftill continue in a thriving flate, 

 and bear very fine fruit. 



In 1 795 I ufed the above method with a great many dwarf 

 Apple-trees ; and the effeel: was fo vifible next feafon, that all 

 who faw them took notice of the great difference between 

 them and the remaining trees, which we had left to nature ; 

 the latter bearing no fruit, and their leaves being eaten by the- 

 caterpillar, while the former have borne fine clean fruit ever 

 fmce, 



The 



