The Anatomy Book IV. 
Tab. 45. 
Tab. 45. 
Tab.46,& 
47: 
Tab.46,47. 
15. $. That of Black Poplar, by Three ; and each Edge by Three 
repeated. Onthcleft, the Diameter of the Firft, is the Length of the 
Leafs of the Second, Half thelength 5 of the Third, the Length and 
Half, The Meafure of the right Edge, is that of the left, Inverted: 
the fame Meafirre there beginning at the Bafe, and ending at the Cone; 
which here begins at the Cone, and ends at the Bafe, 
16. §. That of Doronicum, is meafured by Three Circles, whereof, 
one isrepcated Once; and another Thrice. The right Edge by Two, 
and One repeated. For the Diameter of the Firft or that next the Cones 
is the Length of the Leaf’; the next is the fame, butdrawn Outward; 
the Diameter of the Third, is Half the Length. The left Edge, by 
Three Circles; whereof One is repeated on the fame Edge, and Two, 
the fame, as onthe other. For the Diameter of the firft, isthe Length 
of the Leaf 5 of the Second, Four times the Length 5 the Third, the 
fame as the Firft; and of the Fourth, Half the Length. 
17. 6. Laftly, that of Mountain Calamint is meafured by Four 
Circles, The left Edge, by Three Circles, of which, the lowérmoft is 
once repeated: the right Edge alfo by Two; whereof the nether is 
likewife once repeated. 
18. $. Itmay feem, even from thefe Inftances, no very unobvious 
Conclufion ; That all Crooked Lines, Spiral, Helick , Elliptick, Hyperbo- 
lick, Regular, or Irregular 5 are made up of the Arches of Circles, having 
either the fame, or divers Centers and Diameters. And, as otherwife, 
fo from the Contemplation of Plants, men might firft be invited to Ma- 
thematical Enquirys. 
19. $. TOGETHER with the Figure of the Leaf, the Pofition 
of the Fibers, as it is apparent before Diflection, is obfervable; efpeci- 
ally onthe back of the Leaf. Whereof I fhall add, to what I have 
faid in the Fir Book, the following Remarques. 
20. $. Firft, that there are fome Leaves, in which the firft Colla- 
teral Fibres make Right Angles with the Great one in the midle: as 
the Great-Maple, the Great Celandine, Chondrilla, and the reft, or many, 
of the Intybous Kind ; with fome few others. But that generally all the 
chief Fibers of a Leaf, make Acente Angles together : both where they 
ftand collateral with the midle Fiber, as in Strawberry ; and where they 
all part at the Stalk, as in Mallow, 
21. $. Again, that of thefe, there are fome few, any two of whofe 
Defining Fibres making two Rays of equal Length, take in One Eighth 
Partofa Circle, as in Mallow 3 and in fome one Tenth: but in: molt 
they take in either one Twelfth part, as in Holy-Oaks or one Sixth, as 
in Sirynga. So that where the Fíbres ftand Collateral with one in the 
the midle, if you fuppofe them to be drawn out at Oppofite Angles 3 
or where the chief Fibers part at the Stalk „ you only take in the stalk; 
you will thereby divide a Circle into Eight, Twelve, or Six equal Parts; 
asin Sirymga, the Vine and others. And fo likewife, where there are 
feveral Sprigs upon one stem, asin Fenil, Hemlock, and the like: 
as will beft be underftood by the Figures. 
NES 
