Xll PREFACE. 



In such a case they will be enabled, by 

 means of this small dictionary, to make out 

 at least the principal characteristics of any 

 specimen they maybe inclined to examine. 

 For the same reasons, a table of colours 

 has been considered worthy of insertion, 

 and has, therefore, been attempted^ though 

 without any very sanguine hope of success. 

 So much depends upon the modification 

 of ideas, with respect to colours, in them- 

 selves so various, and so few people possess 

 precisely the same impressions of mix- 

 ed and blending tints, that it becomes 

 nearly impossible to establish any thing 

 like a standard, by which the external 

 tracings of a single subject of natural his- 

 tory shall be accurately, and intelligibly 

 described. 



