W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. 22' 



INDEX. 



In this Index, which has been compiled by Mr. W. Denison Roebuck, 

 F.L.S., are given all names of classes, orders, sub-orders, families, sub- 

 families, genera, sub-genera, species, sub-species, varieties, and forms, with 

 most of the specific synonyms, but no attempt is made to disci-iminate in 

 the Index between species, varieties, and synonyms, nor to indicate the 

 authorship of the various names. In short, the Index is simply an Index 

 of Names. 



