INTEODUCTION 



TO THE STUDY OF MARINE BOTANY. 



The marine Algae or Sea -weeds are flowerless 

 plants^ the growth of that 



" Majestic main, 

 A secret world of wonders in itself." 



Their structure in many instances is exceedingly 

 simple, consisting in some species of strings of 

 cellules loosely adhering together j others present 

 the appearance of branched threads, which in those 

 kinds of a more perfect and intricate structure, are 

 joined together and form the stem and branches. 

 In the higher tribes many kinds possess distinct 

 stems and leaf-like fronds, resulting from a mem- 



