w 



35^ 



DISEASES 



Sect. XIV. 3. y. 



hatched, and to climb the trees infefled with the aphis in the enfuina; 



g- 



Thus from th 



h 



of a few aphidivorous larva or caterp 



from the poifonous juices of fom 



plan 



d from the bridJy 



rmour on the young twigs and leaves of others, the vegetable world 

 3 fo far proteded from the deftrudion, with which it has been, and 



_ 



3 threatened, by the fine probofcis of this multitudinous infed, which 



; bat of Alia, vef- 



man 



of attack refembles that of 



\^ 



pertilio-vampy 



which is afferted by Linneus to drink the blood 



by night of fervants, who deep in the ope 



Syrt:. Natur. p. 46 



and is faid by oth 



be fo fkilful an operator as ngt to wake th 



patient by the pundlure, which 



ma 



bly fans th 



em 



th its wings. 



3. Many of the orchard's of apple-trees in this country are liable to 

 lofe all their leaves by the depredations of caterpillars ; the fame oc- 

 €urs to ^oofeberry-trees in fome gardens, and to cabbages in the latter 

 part of the fummer. 



A few years ago I obferved, that the bloflbms of the quince-tree 

 before they were quite expended, were perforated by a fly; as the 



wound could be eafily difcerned like that on youno- 



£> 



nuts. 



hen 



wounded by thecurculio; and all the bloflbms of a large tree were 



thus deftroyed by 



fmall 



pillar. And in this 



fummer of 



s 



1799 the apple-bloflbms in this country are much injured by a cater- 

 pillar, which eats the feed in the pericarp of each bloflbm either be- 

 fore or at the time of its impregnation, the petals of the flower clof- 



ing again over it and dy 



The leaves of many trees are renewed after having been totally de- 

 flroyed in the early part of the feafon ; as thofeof the apple-tree above 

 mentioned, which had loft its leaves entirely by lightning ; as the 



mulberry-trees in Italy, which are thus robbed of their firft 



feed filk -worms, 



fafliionable potat 



the tea-tree in China, which is thus robbed for a 



Andlaftly, as the euonymus,. or fpindle-tree, 



which 



