42 INTEODUCTION. IV. 



Charleston harbour, as well as the first collection of Florida AlgaB which I received, 

 and which Dr. Gibbes obtained from their collector, the late Dr. Wurdemann. 

 Through Professor Asa Gray, of Cambridge, Mass., long before it was my good 

 fortune to know him personally and intimately, I received collections of the Algaa 

 of Boston Harbour made by Mr. G. B. Emerson, Miss Morris, and Miss Loring, 

 (now Mrs. Gray) ; also of the Algse of Khode Island, made by Mr. S. T. Olney, 

 who has done so much to illustrate the botany of that State, and by Mr. George 

 Hunt. My gatherings from the same coasts have since been much enriched by 

 specimens from Dr. Silas Durkee, of Boston, Dr. M. B. Roche, of New Bedford, 

 and Mrs. P. P. Mudge, of Lynn. 



To Professor Tuomey, of the University of Alabama, I feel especially indebted 

 for the care and kindness with which he formed for me an interesting collection of 

 the Algse of the Florida Keys, and the more so because this collection was made 

 purposely to aid me in my present work. My friend Dr. Blodgett, of Key West, 

 also, since my return to Europe, has communicated several additional species, and 

 is continuing his researches on that fertile shore. To the Rev. W. S. Hore, now of 

 Oxford, England, (a name well known to the readers of the Phycologia Britannica) 

 1 am indebted for a considerable bundle of well preserved specimens, gathered at 

 Prince Edward's Island, by Dr. T. E. Jeans ; and to the kindness of my old friend 

 and chum, Alexander Eliott, of the Dockyard, Halifax, I owe the opportunity 

 of a fortnight's dredging in Halifax harbour, and many a pleasant ramble in the 

 vicinity. 



My personal collections of North American Algre have been made at Halifax ; 

 Nahant beach ; New York Sound ; Green Port, Long Island ; Charleston harbour ; 

 and Key West ; and are pretty full, especially at the last named place, where I 

 remained a month. 



The few Mexican species which find a place in this work have been presented to 

 me by Prof. J. Agardh of Lund, and were collected by M. Liebman. Those from 

 California are derived partly from the naturalists of Capt. Beechey's voyage ; a few 

 from the late David Douglas ; and a considerable number brought by my prede- 

 cessor, Dr. Coulter, from Monterey Bay. I have received from Dr. F. J. 

 Ruprecht of St. Petersburgh several Algas from Russian America ; from Sir John 

 Richardson a few Algse of the polar sea ; and various specimens of these plants, 

 which have found their way from the North West Coast to the herbarium of Sir 

 W. J. Hooker, have, with the well-known liberality of that illustrious botanist, 

 been freely placed at my disposal. 



But I should not, in speaking of the Nortb West Coast, omit to mention a name 

 which will ever be associated in my mind with that interesting botanical region, 

 the venerable Archibald Menzies, who accompanied Vancouver, and whom I 

 remember as one of the finest specimens of a green old age that it has been my lot 

 to meet. He was the first naturalist to explore the cryptogamic treasures of the 

 North West, and to the last could recal with vividness the scenes he had witnessed, 

 and loved to speak of the plants he had discovered. His plants, the companions of 

 his early hardships, seemed to stir up recollections of every circumstance that had 

 attended their collection, at a distance of more than half a century back from the 



