0^1 





a-' 



Ml'.' 



& 



Ml) 



c 



j:- 



-c out. 



If 



i^ryof 

 o! the 



wcuto 



tree ap- 

 1, from 



s 



(hoots 



it num- 

 »Q are in 



• having 



out fifty 



nd ad- 

 fore^ 



a 



or 



I 



were 



at 



je 



toio^' 



► 



or 



four 



re 



lias 



iby 



\V 







tbeif 



e 



Sect. XIV. 3. 2 



OF PLANTS. 



o 



J 



45 



Thefe were at firft green, but in a few days became brown, and by 



d 



quite 



black. They were of regular oval figures about 



th of an inch 



th 



d about half 



broad 



d adhered 



centn or an uicii 111 1^1151.11, c^w^ r ' c 



firmly by means of fomething glutinous, and refifted the feventy of 



the w 



Other infeas, which are produced from eggs, and become winged 



: live for fome time in the intermediate ftate of 



butterflies or moth 



pillars or la 



During this ftate of their exiftence they feed 



fruits or ke 



the leaves, on which they are hatched 



after they have acquired wings and organs of reprodua 



them take no food, as the filk 



but 

 fome of 



d others live only upon ho- 

 bees, and moths, and butterflies. Now the aphis, I fuppofe, 

 has no intermediate ftate, between the egg and the fly, and there- 

 fore makes no holes in the leaves by eating them ; or if any of them 



ney 



previoufly exift in a caterp 

 which are produced from e 

 of future attention. 



or 



ft 



the early fp 



be only thofe 

 ch is worthy 



Whence I fuppofe, that this fly lives not by confuming th 



fo 



liao-e of the plants, which it inhabits; but by p 



th 



e pulmo 



nary veiTels in their natural ft 



the lymphatic veflels of the leaf 



IX 



their retrograde ftate, by a fine tube or probofcis, which it pofl'effes 

 d which it^inay be feen by a common lens perpetually to employ 

 (hewn under its chin in the magnified infed at figure firft of pi 

 For the fap-juice or vegetable chyle is brought from 



the rad 



cles of each leaf-bud, and propelled up the long caudex to the pulmo- 

 nary artery of the leaf, where it becomes oxygenated, and converted 

 into vegetable blood. And may thus be extraded by the tubes of 

 thefe infeds before its fanguifixation. 



Perhaps thofe aphifes, which were from eggs, might eat fome part 

 of the peach leaves during their larva ftate, if fuch exifts, and occa- 

 fion them to curl up. While thofe, which were a viviparous progeny, 

 might only pierce the fap-veflels, or blood veffels^ and thus not ap- 



Y y parently 



