$ A 
190 The Anatomy Book IV. A 
6. $. From the fame Caufe, it is alfo molt agreeable, That the 
Fruit Should not come before the Leaves or Flower, but laft ofall. For 
the Aer-Veffels, as hath been often noted, are not exact! y Cylindrick , 
but tapered; that is, not only the Fibres confifting of divers of thefe 
Vefels, but the Yeffls themfelves, as they aftend into the Trunck, 
Branches, Leaves, Flower, and Fruit, grow {till more and more flender, 
So that the fmalleft coming lat, and being the moft pliable 5 they are 
alfo beft accommodated for the Expanfion of the Parenchyma into that 
we call the Frust. 
7. $. Ivis likewife a proper Queftion to be asked, How it comes 
to pa, That fome Plants bear a Fruit, and not all? 1 anfwer, That 1) 
as the Size of the Aer-Vefels conduceth’ to the Bulk of the Fruit, and 
the Order of its Growth: So the Number of them, to their being, or * 
not being, any Frust at all. Forthe Fruit, as we have already de- 
fined it, isan Uterus, which grows moyfter and fofter, as the Seed vr 
ripens. The reafon therefore, why the Uterus in fome Plants, conti- 
nues moift and foft after the Seed is ripe; and in fome, dries up5 is, 
Becaufe in the former, there isa fmaller, in the latter, a greater Quan- 
ty of the Aer-Vefels in proportion to the other Parts of the Uterus, 
and foa greater quantity of Aer. Which'as in the Pith of moft Plants, 
fo here, by degrees excludes'the Sap, or rendring it more evaporable, 
comes in the room of it ; and fothe Uterus is dryed up: that is, there 
is no Fruit produced, but only a’seed-Cafe. 
8. $. From the Size, Number, and Pofftion of all the Veffels in Fruits 
a reafon alfo may be given, for thie diverfity of their Tafis. Some In- 
ftances have before been given; to which 1 (hall add one or two more. 
So the Rind of an Orange, is bitter; the Pulp, fower. Becaufe the 
former is furnithed with many Lignous Veffels, the Sulphureons or Oyly 
Tinéure whereof, being copioufly mixed with the Acid of the Paren- 
chyma, produce that Tafi. Whereas the Pulp, which is very fower, is 
void of all manner of Veféls. But if the sap-Veffels are either lef nume- 
rous or leß Sulphureons; they give fo mild a Tincture to the Parenchyma, 
as not to produce a bitter, but a fweet or foft Taj? s asin Apples,Grapes, 
Goosberries, &c. And of a Goosberry, it is particularly to be noted, 
that whereas, in a Limon, the Pulp only is fower, as being void of 
Veffils: here, on the contrary, the Pulp only is fweet, whereinto all 
the Vefels ftrike, and the Rind fower. 
9. $. Thediverfities of the S% it (elf, have their Ufe, And there- 
fore, the more tender and delicate the Fruit is; the Ski», on the con- 
trary, is thicker and more tough. ` So Apples have a thicker Skin, than 
Pears 5 Plums, than Apples; and Grapes than Plums; thofe having as 
it were, only a Coat of Kid, but this of good thick Buf: And there- 
fore fome Fruits, although tender, yet either not having fo rich a 
Fuyce, or coming early, and fo not being expofed to exceflive heats, 
have a very thin Skin, as Mulberries, Strawberries, Kc. 
CHAP. 
