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32 

The Anatomy Book I. 
twixt the two Row/s ; on whofe fecurity the growth of the Leaf 
in length depends. But thofe of Bears-Ears, Violets, Doves Foot, 
Warden, and many more; upon contrary refpects; are rowled up in- 
wards. Laftly, there isthe Tre-Rowl, as in Fern; the Labels where- 

_of, though all rowled up to the maiz stem, yet could not ftand fo 
firm and fecure from the Injuries either of the Ground or Weather,unlefs 
to the Rowls in breadth, that by the length were fuper-inducd 5 
the Stalk, or main Stem giving the fame . Protection here, which in 
other Plazts by the Leaves, or fome particular Mantling, is contriv’d. 
Thefe, and other Foulds, See in the Figures belonging to the Firs 
art of the Fourth Wook. 
17. §. According to the Form and. Foulding of every Leaf or 
Germen, is its Protection order’d about fix ways whereof may be 
obferv'd 3 fe. by Leaves, Surfoyls, Interfoyls, stalks, Hoods and Mant- 
lings. Toadd to what we have above given, one or two Inftances. 
Every Bud, befides its proper Leaves, is covered with divers Leafy 
Paunieles. or Surfoyls;; which, what the Leaves are to-one another, 
are that to them all: For not opening except gradually, they admit 
not the Weather, Wet, Sun or Aer, toapproach the Leaves, except by 
degrees refpondent, and asthey are gradually inur’d to bear them, 
Sometimes, befides Surfoyls, there are alfo many Interfoyls fet betwixt 
the Leaves, from the Circumference to the Center of the Bud; as in 
the Hal. For the Fibres of thefe Leaves ftanding out fo far from a 
plain furface 5 they- would, ifnot thus fhelter’d, lie too much expos‘d 
and naked to the Severities of the Weather, Where none ofall the 
Protedions above-named,. are convenient, there the Membranes of the 
Leaves by continuation in their firft forming ( together with fome F7- 
bres of the Lignous Body) are drawn out into fo many Mazviles or 
Veils; asin Docks, Snakeweed, &c. For the Leaves here being but 
few, yet each Leaf and its Stalk, being both exceeding long; at the 
bottom. whereof the next following Leaf ftill fprings up; the form 
and pofture of all isfuch, as fuperfedes all the other kinds of Protecti- 
on, and fo each Leaf apart isprovided with a Ver toit {elf Thefe, 
and other Proteéfions, See in the Figures belonging to the Firft (art 
of the Fourth Wook. 
18. ¢ The Ufes of the Leaves, I mean in refpect of their fervice 
to the Plant it felf} are thefe- Firft, for Protection; which, be- 
fides what they give one to another, they afford alfoto the Flower 
and Fruit. To the Flower in their Foulds ; that being, for the moft 
part, born and ufher’d into the open Aer by the Leaves. To the - 
Fruit, when afterwards they are difplay’d, as in Strawberries, Grapes, 
Rajfps, Mulberries, &ce. On which, and the like, fhould the Sun- 
Beams immediately ftrike, efpecially while they are young, they 
would quite fhrivel them up; but being by the Leaves {creened off, 
they imprefs the circumjacent Aer fo far only as gently to warm the 
faid Fruits, and fo to promote their Fermentation and Growth. Ana 
accordingly we fee, that the Leaves above-named are exceeding large 
in propotion to the Fruits: whereas in Pear-trees, Apple-trees, 8c. 
the Fruit being of a folider Parexchyma, and fo not needing the like 
protection, are ufually equal with, and often wider in Diameter than 
the Leaves. 
‘ 19. $. 

