GEOLOGY. 161 



Few travellers will want a sufficient interest in 

 Natural History, but many may not be able to 

 spare the time to act up to all the particulars of 

 our instructions. Even to these we shall be grate- 

 ful, if they will send us skins of animals in cases 

 covered with pitch; small animals, thrown pell- 

 mell into a barrel of spirituous liquor ; seeds ga- 

 thered at random ; and minerals, with a note indi- 

 cating the place where they were collected. We 

 will only add, that the more attention they can af- 

 ford to our instructions, the more they will realise 

 our views for the benefit of science and our coun- 

 try. These instructions have not been compiled for 

 those who make Natural History a secondary ob- 

 ject, but for those who devote themselves to it from 

 preference or opportunity ; we must observe, that 

 we will gratefully return such of our duplicates as 

 they may desire, towards the completion of their 

 own collection, in exchange for the objects they 

 may transmit to us, by such European vessels as 

 touch in their neighbourhood. 



order that they may be perfectly fresh, the original surfaces 

 being subject to alteration, from long exposure to the atmo- 

 sphere. 



