i ee err 
f 
APPENDIX. 
Ix the preceding sketch, I have had frequent occasion to refer 
to the wonderful diversity of Fossil Shells,which presented 
themselves in different quarters of this interesting country ; 
but in order to. preserve connection, I have refrained from 
mixing up. with the text, the description of them, when: de- 
scribing the different localities in which they occurred ; and I 
am the more satisfied with having done so, because, with the 
assistance of Captain Brown, who has already so»greatly distin- 
guished himself as a conchologist, I am enabled to present to 
the Society a very distinct, and,. I trust, what, will be found to 
be a very: interesting account, of these fossils. And as te 
testimony. to ales, acuteness, the unwearied and anxious per- 
severance with which that gentleman prosecuted his investi- 
gations, on objects truly, microscopic, sparing neither time nor 
troubles in chiphre himself of the accuracy of his observations, 
shied me of pin which he sage new, together with a very 
correct, drawing (see Pl. X. fig.8.) of the specimen from. the 
summit of Mount Cao, mentioned in the text, of which I have 
had occasion to take so much notice. | I requested him to. make 
this drawing, in order to preserve a specimen, that I fear, 
has every chance of being unique; a merit which, however 
gratifying to the self-love of the mere collector, does not add 
to its value in a geological cabinet. A faithful and accurate 
engraving is the only means of remedying this evil. 
All 
