}Qlf^ ON THE METHOD OF JUSSIEU..^ 



plainer taanfier, I had the delight of showing it to several 

 gcutiemen in various conditions: first without any vessels 

 except tlie bastard pipes, and afierward a little lower with, 

 not only bastard pipes, but the silver grain complete, and the 

 sap vessels: but this has been repeated in several grafts — 

 indeed they need but be taken early enough, and they cmi-^ 

 Qpt fail to show this effect. ' 



• •s»|i!f),the observations which I have mentioned as necessary to 

 form a complete account of each individual plant, in the 

 hopes of detecting the analogy necessary to produce the dis- 

 covery of a natural method, I did not mean to lind fault with 

 the botanical description, for certainly Dr. S. has left us no- 

 thing to be desired on this head : but anatomically we may be 

 said to be wholly ignorant of plants ; this will undoubtedly 

 produce an analogy closer and superior to all except a 

 Different chemical analysis of its juices* : — to prove this 1 need give 



juices convey- "b^^ ^ few; there is in most plants a place of separation to 

 ed to separate ^ ^^ ^ . • , p i n 



parts of a convey each ditierent juice to that separate part oi the flower 



plant. it is intended to form and nourish. Linneus was of this 



opinion, and from the first dissections I made, I was con- 

 vinced of the truth of the, suspicion — 1 have since found it 

 in almost every plant I could obtain, both exotic and native: 

 some have this division under the pericarp, some at the 

 bottom of tke flower stalk, and the change is most conspi- 

 cuous. There is also another curious particular — in all the 

 phaseoli, and a few diadclphian plants, an increase of the 

 joint, I noticed something resembling this in the mimosa, 

 bcnsitiva — but that had but one ball : but in the phaseolus 

 cofcinea, the elbow is not more completely jointed than the 

 knots of this plant. The number depends on the smaller 

 stalks shooting from the main stem, for to each there is a 

 ball and socket. This ball turns in almost every direction, 

 and if the large branch is cut, it will show it perfectly. [ have 

 seen as far as four balls, and the ease with which the pedun- 

 cles turn will prove, that it must be something of this kind 

 of- formation : but what is most curious in this contrivance is, 

 no sooner does the plant seed, than the ball decays — and if 



• From what we know already of the chemical analysis of vegetables 

 it'is obvious, that no assistance in fhe c'asVificatioBi of plants can be de- 

 rJ^efl from this source. C. , 



