[ 8 « ] 
XCVIIL Some Obfervations upon the Agaric^ 
lately applied after Amputations , with re- 
gard to the determining its Species . By 
Mr . William Watfon, F. R. S. 
Read Dec. 5, f g ^HE agaric lately applied as a ftyp- 
' v! j|^ tic after amputations, and which 
has been brought from France, I do not believe to 
be the common agaric of the oak, as has been ima- 
gined by the French furgeons. What is called the 
common agaric is a parafitical plant, found growing 
upon the oak, and upon feveral other trees j and is 
denominated by Cafpar Bauhin, Fungus in caudicibus 
nafcens, unguis equini figura ■ of which touchwood 
or fpunk, and the amadoue ordinaire of the French, 
is ufually prepared. I think it impoflible, by any 
procefs, to prepare from the common agaric a fub- 
ftance perfectly fimilar to the French agaric, which 
exactly anfwers the defcription, which Breynius gives 
of the Fungus coriaceus quercinus bamatodes , and of 
which we find the following * account in the Epbe- 
merides nature e curioforum. “ In medio quercus, 
“ lays that author, medullse velut fubucula circum- 
volutus, inventus eft : tener erat, mollis, flexilis, 
planus, nonnihil rugofus, ea longitudine et lati- 
tudine, ut colobium ex eodem commode conficere 
licuiftet : coiore pallido ad flavum nonnihil ten- 
dente ; itemque fubftantia, tra&atione, et figura 
( c 
a 
C( 
<c 
<c 
* An. 4, et 5. Obf. 150. 
5 K 2 
<c alula? 
