ZOOLOGY AND BOTANY. MICROSCOPY. ETC. 193 



hyaliue cells are specially adapted. The terminal bud is therefore 

 clothed with a tissue so provided with pores that it easily absorbs water 

 and stubbornly retains it. 



Thallophyta. 



Algse. 

 (By Mrs. E. S. Gepp.) 



South American Fresh-water Algae.* — 0. Borge adds largely to 

 our knowledge of the fresh-water algae of Tierra del Fuego and Desolation 

 Island as the result of his examination of the collections made there by 

 Dusen in 1906. Up to the present time, the number of species recorded 

 from this district was 3;^), and the present paper brings the total to 77. 

 Six new species are described, as well as several new varieties, which 

 are figured. 



*o' 



Corean Marine Algae. f — A. D. Cotton reports on several small 

 collections of marine algse from Fusan and Wonsen, and records 82 

 species, besides several which were too incomplete to name specifically, 

 and some critical species which are being held over for a future com- 

 munication. The character of the flora resembles that of Japan, but 

 some of the algse have not yet been recorded from that island, and two 

 are new species, Ceramium hamatum and Dumontia simplex. Critical 

 notes are made on some of the records, including Gutleria cylindrica 

 Okam., and Grateloupia divaricata Okam. 



Seaweed Industry of Japan. J — At the request of the British Foreign 

 Office, a report on this subject was drawn up by C. J. Davidson, giving 

 full details of the uses to which algse are put, the manner of collec- 

 tion and preparation, etc., as well as the total amount and value of 

 the material prepared in a certain time. The author states that more 

 than fifty-one species are employed in Japan for various useful purposes, 

 and their collection and subsequent treatment form one of the most 

 prominent industries of the Japanese Empire. They are used as food, 

 and are made into plaster, glue, and starch ; they serve as manure, and 

 from them isinglass is prepared and iodine is extracted. The prepara- 

 tions specially dealt with in this report are kanten (isinglass), kombu ' 

 (kelp), amanori (laver), funori (seaweed glue), and iodine. The author 

 describes in detail the methods of preparation, and gives lists of the' 

 species employed in the work. 



Lamprothamnus alopecuroides.§ — M. McNicol has made a special 

 study of this member of the Characete, which differs from Tohjpellopsis in 

 the possession of stipular cells, and from Lycnothammis and Chara in 

 having the oogonia below the antheridia. She treats of the distribu- 

 tion, general features, bulbils, tubercles, pro-embryos, and abnormal 

 plants. She has found that L. alopecuroides will grow in jars under 

 cultivation for years, provided the water is changed from time to time, 



* Botaniska Studier tillagnade. Upsala : F. R. Kjellman, 1906, pp. 21-33 (1 pi., 

 figs, in text.) t Kew Bulletin, 1906, pp. 366-73. 



X Bull. Imp. Inst. iv. (1906) pp. 125-49. 

 § Annals of Bot., xxi. (1907) pp. 61 70 (1 pi.). 



April 17th, 1907 O 



