ALGM. 



it is required to preserve the marine Algae according to 

 the first method, they should first be immersed for a 

 time in fresh water, to dissolve out the saline matters 

 derived from the sea-water, which would keep them 

 damp and ultimately spoil them. After these matters 

 have been removed, the fresh water should be changed, 

 and pieces of paper placed beneath them while sus- 

 pended in the water ; on withdrawing the paper care- 

 fully, keeping the Algse at the same time spread out, 

 they may be made to retain the required position; 

 and when the water has drained away, and the re- 

 maining moisture has mostly evaporated, they may 

 be submitted to pressure in a press. 



The Confervoid Algse may be conveniently spread 

 out upon paper and preserved in the same manner, 

 as some of the distinguishing characters are founded 

 upon their appearance in the dry state, their adhesion 

 to the paper, &c. Moreover they can then at any 

 time be minutely examined, by the immersion of a 

 small portion in water. 



