ADVERTISEMENT. 



IT was the intention of the Author, as stated in the Advertisement 

 prefixed to Vol. I. to add the tints of Werner's nomenclature of co- 

 lours to Vol. II. Upon repeated experiments with the tints, it was 

 found that the hest water colours produced in their combinations, 

 lading and evanescent tints — and the Author was acquainted with no 

 other mode of colouring them. He believes the tints of Werner's 

 Book to be died by mineral solutions, and afterwards they are evi- 

 dently pasted in squares, opposite to the columns of names. Hence it 

 was impossible for him to add the tints, which he intended to do under 

 the idea that they were produced by the common colours in use. 



