Of the Trunks of Trees. 257 
HMI balfamic veflels : KL another fort of fap veflels in 
parcels: KLCD lymphaedufts: D C EF the wood in 
which the dark fpots, are the air veflels: M .M the infer- 
tions : R another balfamic veflel: E F G the pith. 
Fig. 4.91. is a tranfverfe fedlion of a thifide-ftalk, out 
of which at 1 m was cut a piece, which is feen as it ap¬ 
peared in the microfcope at fig.492 : A B C D the bark: 
HI the parenchyma: e e a fort of fap veflels: a a another 
fort: c c milk veflels: D C E F the wood: V V the air 
veflels: tt more lymphaedu&s: ff mere milk veflels: 
a t infertions : E F G the pith compofed of angular 
bladders, bladders of threads, and threads of Angle 
fibres. 
Fig. 493. {hews a tranfverfe fecfion of fumach flalk, 
and fig 494. a magnified gore thereof, which was cut 
out at n o. A B a a the hairy (kin: A B C D the bark : 
H W I the parenchyma: D M C the common lymphae- 
du&s: KML three milk veflels: HI another fort of 
lymphaedufts, arched over the milk veflels: XX feems 
to be a third fort of lymphaedudts: D C EF the wood, 
the white rays tending from M to M are the infertions : 
Y Y the true wood in which the dark fpots, are air veflels: 
E F a ring of lymphaeducSls: E F G the pith. 
Fig. 495. reprefents part of a vine branch cut tranf- 
verfly at A B G, and ABC, and alfo fplit half way 
down the middle at GGBB, whereof ABAB is the 
{kin: ABCD, ABCD the bark: HH H fap veflels 
in arched parcels: I the parenchyma: C D E F the wood : 
d d d the true wood, in which the dark fpots, are the air 
veflels: K K the infertions: E F a ring of other fap 
veflels: E F G the pith: between G G, F F, is {hewn 
the pofition of the bladders in perpendicular rows: be¬ 
tween D D and B B is feen the fame of the barkj and 
S between 
