S E C T I O N V. 105 



difperfed through many and tedious vo- 

 Jumes. 



My views being to remedy theie inatten- 

 tions, as far as lies in my power ; I lliall 

 ftrive to give fome inftrudions to obtain 

 fuch fcientifical ends, 



I have ahvays found each feparate col- 

 Ie<5Hon to contain fome or many fpecies 

 pot met with in others; and alfo particu- 

 larities of fpecies, caufed either by different 

 growths, accidents, &c. that are inftruaive, 

 A number of fuch obfervations relative to 

 the fizes, colours, &c. of one fpecies, fe- 

 leded from different colleftlons, united 

 ^nd collated together, cannot fail to form a 

 confiderable part of the natural hiftory of 

 bodies : and (hould therefore always be at- 

 tended to, by thofe that are fpeculative. 



For example. Dr. Lifter fliies the Tor- 

 toife Limpet higem, or of the firft mag- 

 nitude; yet wd feldom fee them very large 

 in our coUedions. The Shells are gene- 

 rally 



