CONTENTS. 



PAGE 



Systematic List of Oeders, Genera, and Species . . xvii 



Chaptee I. — The Position of Sea-weeds in the Ve- 

 getable Kingdom ; their Structure, etc. ... 1 



Chapter II. — On the Colour, Distribution, etc., of 



Sea-weeds 16 



Chapter III. — On Collecting and Preserving Sea- 

 weeds, their Uses, etc 24 



Olive-coloured Sea-weeds. — Melanosperme^: . . . 36 



Fucaceae 36 



Sporochnacese 46 



Lammariaceee 51 



Dictyotacese 55 



Cliordariacese 66 



Ectocarpaceee 75 



Bed Sea-weeds. — Ehodosperme^: . 87 



Rhodomelacea; 87 



Laurenciaceae 118 



Corallinaceee 125 



Hapalidiacese 133 



Sphserococcoideae 134 



Gelidiaceae 149 



Spongiocarpeae 151 



