( 658 ) 
fm,tll Bladders : Which Bidders, S/^;;.Malpighi hath likemfe ohfer^ 
ved, calling them utriculos ; See him in the for ecited place : But not^ 
their being eompofed of fuch Fibres, thefe Bladders, being(^in cleaving 
a Branch) many of them cut open. Dr. Grew tells me^ he conceiveth^ ' 
may be taken by Mr Leewenhocck for the Mouths ofVeffets, But in 
moft hard Woods^ the Bladders he idith,are fcarcely to befeen\ the /aid 
Fibres being fo clofely couched and dravpn up together, as to lye rather 
after the Manner of theVeffelsin the Liver, TepclcSy Glands, and 
other Vi fcer a in Animals. 
6. the whole body of Wood — confifls of Pipes]Dr. Grew 
hath formerly gathered upon probable grounds^ that not only the Wood, 
but that the whole of a FUnt, doth confifl of Pipes. See his Anat. of 
Roots, part, 2» Ch^ult, and Anar. of Trunks p. iS. and p. 34. 35^ 
»5^^ ^//1^/^^ latter Paragraph of the Hoit'^. 
1, as clear as Cryftall] the fame Dr. Grew hath faid in his Anat. 
. of Roots, p,' 1 14* 
8. otfiiHll Globuls] Dr. Grew hath given a further and more 
particular Defcription of the Structure of thefe Fejfels; Anat of Roots- 
p 89. and Anat. of Trunks p. 30. and fig* 24. h hich, if wellmind^ 
ed, mill give you the reafon^vphy they feem^effe daily in Vines, Oak, a ftd 
feme other Flants, to confijl of Clobuls. 
^.Valves] Of the fame appearance of pithy Valves, Dr. Crew 
maketh mention in his firft book of the Anatonay of Plants p* 71. at 
the beginnings 
But that in the Sap Vejfels there are no Valves , heproveth hy di^ 
vers arguments: Sf^A/V Anat. of Trunks p.45, 46. the fame perfon 
doth alfo acquaint me^that he hath made fome experiments, rpbereby he 
proveth, that there are m Valves neither in the Air-Veffils : Which i 
frppofe he referveth to be f^biijhed together vpith further Obfervati- 
ons upon Plants, 
10. thefe three ^oxts^-'^'-^'jthefe three generalFarts Dr.Crew 
hath, as is faid, defcribed and reprefented in feveral Figures , (bemtfg 
the different texture of fo many fever al forts of Wood. Seehmi. of 
Trunks p. 20. to 30. compared tvith the f igures and the Explicati- 
on of the fame. But for what he faith of one of the faid three parts^ 
(which Mr. Lewtnhoeek, calls athirdfort ofVeffels^feethe Note 5, 
11^ of one Sort] JDr.Grew hath hth defcribed, and by his figures 
(Anat. of Trunks) refrefented two forts of Veffeh ; in the Wood 
of Jfh, and divers other Trees^ But all thefe Vejfels, whofe pores or 
mouths are reVrefented,are indeed of one fort only\ excepting in the 1 8. 
T\^r^\which made MriLeewenhoeck (y2ir want of skill in the Eng- 
