100 THE ELEMENTS 



all seas. Found plentifully on the 

 sides of the New Bason, Leith. 



Linn. Trans, vol. viii, page 28. 



BB base, CC peduncle, DDD li- 

 gament, E E feelers, G a piece of 

 wood to which the peduncle is affixed. 



Fig. 3d. represents a spoon for lift- 

 ing fresh water shells. It is made of 

 •white iron of a circular form, and fi\Q 

 inches in diameter, concave, and per- 

 forated with small holes to allow the 

 water to escape ; they must be very 

 small. The margin should be sur- 

 rounded with a perpendicular rim of 

 about half an inch in height. Some 

 of the fresh water shells being ex- 

 tremely minute, of course will pass 

 through with the water, if the holes 

 are too large. There is a hollow 

 handle to the spoon, which should be 

 fitted to the point of a walking stick ; 

 and it may be put into the pocket when 

 not used. This spoon will be found 

 very useful, in taking shells which sel- 



