( 2C,6 ) 



ABCD F, fplit lengtliwife, at the part marked DF, I placed before- 

 a microfcope, and this very tliin particle, fo fplit off, is fliewii at 

 ;^-. 8, PORS, in which appenr eight dilUnct places, where the hori- 

 zontal veilels are cut in this oblique numncr, as may be feen by the 

 cavities in many of them, a part of which is fliewn at O. 



The perpendicular afcending vellels, fg. 8, P S, or Q R, are thofe- 

 fmall vefTels, which mfg. 6, between K and L are fliewn cut obliquely. 



Moreover, I fpht this branch of wood in the middle, as the line 

 ABC m^g. 4 denotes, and from the piece fo fplit, I cut a fmall par- 

 ticle, dividing the horizontal vefl'els longitudinally. This particle of 

 wood is reprefented ntfig. g, T VW X Y Z A B, w here T V, and Y Z, 

 are the afcending veHels, and the horizontal vefTels which crofs them, 

 are fliewn at \VX and AB : and in, and among thefe horizontal veflels 

 we faw various minute globules, which the limner, as nearly as he 

 was able, imitated in the drawing. 



In my obfervations on this wood, I faw four I'everal kinds of 

 woody tubes, befides other fmaller ones, which, by reafon of their 

 jninutenefs, as I judged, could not be diiiindlly feen , but thofe w hich 

 could be dihinguifiied I caufed to be drawn. 



Fig. 10, CD, reprefents a tube of the wood partly compofed of 

 annular parts, like a wire wound round a pin ; and, next this a tube 

 formed in a ditYerent manner, feeming to confift of a pellucid mem- 

 brane, covered with many fmall dots or fpecks, which in I'everal places 

 were contiguous to each other; this tube is reprelented m ^g- lo, 

 atEE. 



Fig. Ti, G H, reprefents a third tube of the wood, covered with 

 fmaller fpecks or dots, but, what is more remarkable, it contains 

 in this fmall fpace five joints, very much like thofe of v>iiich Itraw 

 is compoied : two of thefe joints are reprefented at G and H. 



I endeavoured alfo, if pofllble, to difcover the formation of the 

 larger tubes, ihcwnin fg. 6, at I, I, K,L, and while 1 was thus 



