on preferving Specimens of Plants, vec ae 
inftruétions, are practifed in the ufual methods of preferving dry 
{pecimens, and that they are aware that particular care fhould be 
taken to pare off the back parts of thick woody ftalks, and of the 
globofe, fucculent heads of flowers, as well as of the buds of thofe 
intended to be pafted down, previous to their preffure. For the 
moft fatisfactory . information on thefe particulars, the reader is re- 
ferred to the Introd xhu&tion to Dr. Withering's excellent work above- 
mentioned. It is almoft needlefs to mention, that aluminated fpe- 
cimens will be completely guarded from the erofion of infects, as 
well as from the danger of being injured by damps; and therefore 
the procefs will be particularly valuable to thofe who vifit foreign 
countries, | 
As beauty and durability are of fo múch confequence i in the ar- 
rangement of an herbarium, and as plants cannot be preferved any 
length of time in perfe&ion even with the ufual apparatus of 4 vaf 
culum, or tin-cafe, no botanical traveller fhould be without a: {mall 
prefs, fuch as that defcribed in Dr. Withering's Arrangement, v. 1. 
Pr 3L Xt may be eui fo as to admit of à drawer for receiving 
the preferved fp ns; either - thin enough to lie under the feet 
in; a po 
t-chaife ; + g as a Piet for a third perfon is often defirable, i it 
may ‘be contrived to be as high as the feat of the carriage, with à 
correfponding cufhion on ius eo 
N: | On. 
