19 



cumstance occurred under my own observation, 

 at the mouth of the Guadalquiver, near Cadiz ; 

 where, after a gale of wind, and at ebb tide, a 

 reef of bivalves was left, several feet high, and 

 above a mile in length, from whence J select- 

 ed many fine varieties. Indeed, almost every 

 gale of wind throws up some interesting shells. 



FROM the interior, near Santa Cruz, from Isle 

 Grande, Sebastian, Porcos, and that Archipe- 

 lago, also along the coast to Bertiojo and San- 

 tos, I collected many curious shells; but, 

 strange to tell, I have found it difficult to per- 

 suade any one to send me another supply, al- 

 though they may so easily be obtained. No, 

 they think them common, and because they 

 really are so there, they do not bring or send 

 them. We know nothing of the shells pro- 

 duced along this coast, more than that they are 

 in request for the table. The low land about 



