THE MARINE AL(LE OF GUERNSEY 51 



Laminaricp. After the salts have been extracted the portions are 

 boiled in llavoured syrup. " Seatron " is the name given to these 

 preparations. 



Aceordmg to a writer in Chambers's Journal for 1917 (p. 555), 

 seaweed is one of the many sources for obtaining acetone, a chemical 

 used in the manufacture of cordite. Large quantities are obtained 

 and used for that purpose in America. 



Culture. — In view of the careful culture of seaweeds in Japan, as 

 narrated by Yendo, and their productiveness as a source of revenue, 

 it seems worth while to give the matter some attention. There is no 

 necessity to sow the spores : a suitable substratum alone is requisite. 

 In Scotland and Ireland where Fucus farms exist, stones are set down 

 on flat sandy or muddy fore-shores on which abundiint growths of 

 vegetation soon appear. The rocky shores of G-uernsey hardly require 

 such preparation. Should, however, the seaweed industries of the 

 Island increase, and necessitate further supplies of the weed, its growth 

 might be augmented by putting down boulders and stones of suitable 

 size, where there is a sandy bottom. The vast tracts in Grande 

 Havre, on either side of Lihou causeway, and along the Vale coast, 

 etc., could be treated in this way. 



YII. Bibliography. 



Adrian. " Sur Temploi de certaines Alg-ues marines pour ralimentation des 

 chevaux." Comptea Rendus Acad. Sci. Paris, torn, clxvi. 1918, p. 54. 



Anstead & Lathom. The Channel Islands. London. 1862. 



Ardissone, F. Flor idee ItalichQ^ i., ii. Milan. 1869-78. 



Baker, S. M. "On the Causes of the Zoning- of Brown Seaweeds." New 

 Phjtol. viii. 196 ; ix. 54, 1909-10.—" On the Brown Seaweeds of the Salt 

 Marsh." Journ. Linn. Soc. xl. 275-291, 1912 ; xliii. 325, 1916. 



Batters, E. A. L. " Marine Alga^ of Berwick-on-Tweed." Trans. Berwick- 

 shire Naturalists' Club. Alnwick. 1889. — Handlist of the Algse of the 

 Clyde Sea Area. 1891. — " New or Critical British Algae." Grevillea, xxi. 

 97, 1892.—" Some New British Marine Algte." Ann. Bot. ix. 168, 307, 

 1895; Journ. Bot. xxxiv. 384, 1896.— " Catalogue of the British Marine 

 Alga3." Supplement to Journ. Bot. xl. 1902. 



BoRGESEN, F. The Algae Vegetation of the Faewese Coasts. Copenhagen. 

 1905. 



BoRGESEN, F., & Helgi J6nsson. " Distribution of the Marine Algfe of the 

 Arctic Sea and of the Northernmost Part of the Atlantic." Botany of the 

 \Faroe.s-, appendix iii. Copenhagen. 1905-8. 



BoRNET et Thubet. Notes Algologiques, i., ii. Paris. 1876-80. 



BuFFHAM, T. H. " The Plurilocular Zoosporangia of Asperococcus huUosiis 

 and Myriotrichia clavasformis." Journ. Bot. xxix. 321, 1891. 



Cameron, F. G., and others. A Report on the Fertilizer Resources of the 

 United States. Washington. 1912. Senate Document No. 190., 



Chalon, F. Liste ctes Algues Marines. Antwerp. 1905. 



Clarke, Mrs. Lane. Common Seaweeds. London. 1865. 



Collinette, F. C. S. Presidential Address. Rept. and Trans, Guernsey 

 Soc. Nat. Sci. iii. pp. 25-32 and 80-84, 1895-99.— The Sunshine and Rain- 

 fall of Guernsey, 1917 ; op. cit. 62, 66. 



CoLMEiRO, D. Enumeracion de las Cryptogamas de Espana y Portugal. 

 Madrid. 1867. 



Cooke, M. C. British Fresh-Water Algae. London, ii. 1882-84. 



Cotton, A. D. " Some British PhjEophyceae." Joiurn. Bot. xlv. 368, 1907. — 

 '' Colpomcnia siniiosa in Britain." Kew Bulletin, 1908. 73; 1911, 153. — 



