374 " BRITISH SEA-^VEEDS. 



necessary, there are certain states of these plants in which 

 they may be covered and pressed in the common way, and 

 those tliat are thus treated make by far the finest specimens. 



There are several ways in which collections of sea- weeds 

 may be preserved after they have been carefully prepared. 

 They may be kept loose betwixt folds of paper, and the 

 sheets may be arranged alphabetically according to the names 

 of the plants they contain. This is found very convenient 

 when reference is required, or when a selection from them 

 is to be made. 



When the student of Algology has got specimens named 

 on good authority, they should be kept separate, and may 

 ])e attached by fine pins to the sheets in wliich they are 

 placed. This in their case is preferable to any permanent 

 fastening, because it may often be necessary to examine 

 their structure and fructification by placing them under the 

 microscope, or by holding them up betwixt the eye and the 

 light that they may be examined with the aid of a good lens. 



When specimens are placed in an album, slits may be 

 made to receive the four corners, and in this way they may 

 easily be removed and replaced at will. If the collection is 

 chiefly valued for its beauty — and few things are more beau- 

 tiful than a good collection of well-prepared Algaj — a hand- 



