PATE LL AS, ETC. 257 



vices and on them, will be found many species of 

 patellas, chitons, murices, etc. Make a careful 

 survey of every rock and stone ; they will amply 

 repay the trouble. All sheltered coves or little 

 bays are the best places in which to find shells : 

 examine these places in preference to others, 

 particularly those in more exposed situations. 

 The first thing to observe when in a new locality 

 is to go along the sands at high- water mark, for 

 many good shells are thrown up by the sea, par- 

 ticularly light bivalves ; any time of the tide will 

 do. Never miss going after a gale of wind, for 

 then many valuable deep-water shells will be 

 found which are not seen at other times. In 

 sheltered bays and places just at the very lowest 

 water-mark will be found, in the sand and mud, 

 various species of bivalve shells, just beneath the 

 surface, and generally in great abundance: do 

 not neglect to collect all and every species, and 

 in plenty. 



In collecting shells, whether terrestrial or aqua- 

 tic, the collector must always give the preference 

 s 



