VI INTRODUCTION. 



sit, the connoisseur might discover some rare 

 or interesting varieties. 



ON the sand, at low water, bubbles of froth 

 may be frequently observed : these are indica- 

 tions that some marine animal or shell is con- 

 cealed underneath, which may generally be 

 found by digging a few inches below the surface. 



I SHALL conclude my observations upon this 

 subject, with strongly recommending the voy- 

 ager to employ fishermen to collect for him. 

 These men are well acquainted with the places 

 where shells may be found, and, for a trivial 

 remuneration, would reserve what they met 

 with. 



IT would also amply repay him, to hire an 

 expert negro to go into the interior in quest of 

 LAND-SHELLS ; for, though they are less beau- 

 tiful than those of the Sea, yet they are interest- 



