\ 



\ 



/ 



ircit 



y 



» and 



lugat 

 rt III. 



te are 



in the 



nou- 



:les of 



earth, 

 ano- 

 as the 

 th the 

 ed en- 



bark 



,e 



of the 



on cue 

 • down 



to 



Tary 

 of the 



bark 

 [nofcu- 



le 



nmu 



s early 



;ir 



ve 



btbey 



Sect. III. II. 8 



The inofc 



UMBILICAL VESSELS, 



n of the veffels of a bud cut out of one tree and 



3S 



ferted into the bark and alburnum of another, as In the ingraftment 

 of felons, Is exaaiy refembled by a fimilar operation on animal bo- 

 dies, when a tooth is taken from one perfon and inferted into the head 



of another, and where two inflamed parts grow 



Th 



experienced anatomift is faid to have cut the two fpurs from a young 



cock, and applied them to the oppofite fides of his comb, which was 



and appeared 



and TaHcotius, whofe book lies by me, ferioufly afferts, 



previoufly excoriated, where they continued to grow 

 like horns : 



that he fucceeded in making artificial nofes from a part of the flcui of 

 the arm of his patients, and has pubiifhed prints of the manner of 

 the operation, fo ridiculed by the author of Hudibras. Cheirurgia 



Cafparis TaHcotii. 



The growth of an inoculated bud on the bark of another tree, 

 where the upper part of the caudex of the inoculated bud joins with 

 the lower part of the caudex of another bud belonging to the flock, 

 is flill more nicely refembled by the union of the head and tail part 

 of two different pqlypi in the experiment of Blumenbach, mention- 

 ed in Se£l. VII. 3. 2. of this work. 



8. As the leaves of trees become expanded, the fap-juice above de- 



fcribed ceafes to flow, ai 



d the bark of the tree then adheres to th 



t 



alburnum. Afterwards from the middle of June to the middle of 

 Augufl, as Dr. Bradley has obferved, there feems to be a paufe in ve- 

 getation ; at which time the new buds in the bofom of each leaf feem 

 to be generated, and 



the bark, which during the two preceding, 

 months adhered to the wood, now eafily feparates, as in the fpring, 

 accordincr to the obfervation of Duhamel, Vol. II. 261 ; and veoreta- 



tion, which appeared to languifh during the heats of midfummer, 

 acquires new vigour at the approach of autumn like that of fpring. 

 This circumftance, which feems to have puzzled many naturalifls, 



is to be explained from the a^^ion of the umbilical vefTels of the new 



F z buds. 



The 



