- NATURAL HISTORY. 169 
As thefe infects are viviparous, they muft neceflarily lurk fomewhere’ 
in the winter, where their bodies may be defended from the cold; but 
this is always near the trees or plants that ferve to nourifh them in the’ 
beginning of the fpring ; for they are always found thereon, as foon as 
the leaves and buds begin to open. However they do not hide them- 
felves in the earth, like many other infeéts, becaufe they have no part 
of their bodies fitted to remove the earth, nor are their feet fo fhort, 
as to fuffer them to creep into any chink, belides their bodies are for 
tender, that the leaft rough particle of hair would hurt them; nor yet 
is there any thing elfe which is common to other infe@s, that can en= 
able them to conceal themfelves in the earth. Hence it is plain, that 
they get into the chinks of the bark, and into the cavities of the ftrong- 
er ftalks, from whence they fally out upon the branches and leavesy 
when the warmth of the fun Begins to be felt. Neither the cold of the 
autumnal feafon, nor the lefler degree of heat in O@odcr or March, ever 
hurts them; for which reafon they do not feek for hiding places, be- 
fore the fall of the leaves, by whofe juice thefe’ Lice are nourilhed ;. 
however fome hide themfelves fooner, and fome later. 
They caft their {kins like many other infects, four feveral times, and 
the males have wings, but the females have none? they have long legs, 
not only that they may be enabled'to creep over the long hairs of plants 
and leaves but that they may travel from tree to tree, that fland at a 
diftance from each other: their feelers confift of fix joints, of which 
that at the extremity is roundeft, and they have a very fine fenfe of 
feeling : the trunk or fnout which lies under the breaft, they thruit into 
the pores of the plant, to fuck out the juice; for they do not gnaw 
them, but fo hurt them by fucking, that the leaves become ipotted, 
and as it were over-run with feabs, for which reafon their edges always’ 
turn up towards the middle. 
The breaft is covered with‘a fort of fquare tick, fo hard, as to refilt 
the friction of the body againft any thing when they creep: the two 
forward feet are placed before the horny Tick, near the neck, and the’ 
four hinder behind it. On the laft fe@tion of the body, except ones 
there are foft horns on each fide, which are fharper in fome kinds, and 
blunter in others ; but they do not move thefe like the feelers, and yet 
they have a fine fenfe of feeling, as niay be eafily known by touching : 
them in the gentleft manner. 
It has been faid that thefe infects are often carried off, and devoured 
by Ants; but this Fry/ch could never obferve: the Ants indeed are 
fond of thofé trees where there is a great number of thefe infects ; bat 
then it is only to fuck the juice which flows from the leaves that have 
been lately bored ; and this more particularly in the heat of the fum- 
mer, when other moifture is wanting ; but they never hurt or carry a- 
way any of thefe infects while they are alive, nor yet are they able, for 
when they find any Ants coming behind them, they will kick them as 
way with their hinder feet. 
The males have four wings, of which the uppermoft are the largett, 
and thofe below leaft; the ftripes made by the veins or nerves, are the 
fame in all kinds of Pucerons, only there is fome difference in the angles 
of their extreme parts. However there is one kind to be excepted 
which leaps like a Flea, and®this is not what the French call a Pace- 
von; for they differ from them inthe ftripes of the wings, as well-as 
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