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VI PREFACE. 



history of British Sea-weeds to the present state of the 

 science. Even during the year that has elapsed since 

 the first edition was published, it will be found that 

 some new plants have been added, to the British lists, and 

 that several, for the first time, have been found in Scot- 

 laud, where many, I doubt not, will yet be discovered. 



"Without repeating my thanks to those who assisted 

 me in the first edition, I have much pleasure in expressing 

 my obligations to several, who, by useful information and 

 beautiful specimens, have aided me in preparing the 

 present edition. Eor most beautiful specimens of rare 

 Algae, I have been much indebted to the Eev. W. S. Hore, 

 now of Norwich ; to Dr. Cocks, of Devonport ; and to 

 Mr. Boswars^a, of Plymouth. To Miss Cutler — a name 

 well known to Algologists, and a lady much loved, I am 

 con\inced, by all who know her — I have pleasure in 

 returning thanks for many specimens, and for much 

 useful information. My kindest thanks, also, are due to 

 Mrs. Gulson, of Exmouth, who, having gained for herself 



