740 SUMMARY OF CURRENT RESEARCHES RELATING TO 



adaptations, the cosmopolitanism of aquatic plants. And in a com- 

 bined table of 326 species and varieties he indicates those which have 

 been recorded by Nordstedt, Mobius, Wildeman, Gutwinski, Lemmer- 

 mann, and himself in their respective lists. 



Phytoplankton off the Coast of Normandy.* — L. Mangin has, during 

 the greater part of 1907, analysed the plankton obtained twice monthly 

 from the surface of the sea at about a mile out from the Tatihou 

 laboratory at Saint Vaast la Hougue. He gives a list of the species 

 found on each of the dates, together with a statement of the weather 

 then prevailing. In a synoptical table he shows the comparative 

 frequency of each species on each date during 1907. And in another 

 plate he gives sample photomicrographs of the contents of six of the 

 gatherings. He adds some comments upon the results obtained. The 

 Peridinieaj were very rarely found in the gatherings. 



Irish Alg-ae.t — J. Adams publishes a synopsis of Irish algae, fresh- 

 water and marine, and includes in it a total of 2213 species, 1370 

 fresh-water and 843 marine. In a short introduction he gives an account 

 of the work already done on Irish algaa, and adds remarks on the 

 suitability of the climate, and provincial distribution. Ten species have 

 been found on the Irish coast that are not so far known to occur in 

 Great Britain, among them being Godium elongatum. Halosphara 

 viridis Schm., a warm-water species, occurs in the plankton of the west 

 coast ; while Odontkalia dentata and Ptilota plumosa, which are recorded 

 from Greenland and Iceland, are found on the coast of Ulster, though 

 they are entirely absent from the southern half of Ireland. Alaria 

 esmdenta is common on the north and west coasts, but is much more 

 limited on the east side. The paper closes with a list of bibliography. 



Alg'33 from Hudson's Bay 4 — W. A. Setchell and P. S. Collins give 

 an enumeration of four green, nine brown, and fifteen red algas from 

 Hudson's Bay, apparently the first list of alga? ever published for that 

 sea. A few distributional notes are added. Most of the species are 

 circumpolar. 



Algse of Barbadoes.§ — A. Vickers and M. H. Shaw publish a 

 volume of 93 coloured quarto plates illustrating the green and brown 

 marine alga? of Barbadoes. A. Vickers collected alga? during two 

 visits to the island : and with the intention of publishing an icono- 

 graphy of the subject she studied the species and made drawings of their 

 structure. Her work was but half completed when she died. Her 

 drawings supplemented by life-size coloured figures of the plants have 

 been worked up into plates and edited by M. H. Shaw. The scientific 

 descriptions, which were to have been written, were never prepared. To 

 the ChlorophyceEe are allotted 57 plates, to the Phaeophyceae 36. The 

 RhodophyceEe and Myxophyceaa are not included, A. Vickers having 

 left no material for the purpose. 



* Bull. Soc. Bot. France, lv. (1908) pp. 13-22 (2 pis. ). 



t Proc. Boy. Irish Acad., xxvii. (1908) pp. 11-60. 



\ Bhodora, x. (1908) pp. 114-16. 



§ Phycologia Barbadensis. Paris: Klincksieck, 1908, 30 pp. (93 pis.). 



