ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 527 



LaminariacesB and Laminaria Industries of Hokkaido, Japan* 



Kingo Miyabe publishes part iii. of the " Report on the Investigations 

 on the Marine Resources of Hokkaido " under the above title. The first 

 part contains an account of the Laminariacese of Hokkaido, dealing with 

 their outer and inner morphology, propagation, distribution, economic 

 uses, injuries caused by other seaweeds and marine animals, and classifica- 

 tion. Then follows the systematic part in which 14 plates of species of 

 Laminaria are given, of which 8 represent new species. A new genus is 

 described, Kjellmanniella, founded on Laminaria gyrata Kjellmann, and 

 with this species is associated a new one, K. crassifolia. Species are 

 figured of Arthrothamnus, Costaria, Alaria, including several novelties, 

 Undaria, Agarum, and ThalassiopTiyllum. 



The second part of this paper deals with the Laminarian industries 

 of Hokkaido, under the heading of " Laminaria-Beds," collecting, pro- 

 duce, curing, each part being divided in several subdivisions. 



A chemical analysis of Laminaria, by Kintaro Oshima, and a 

 bibliography complete this work, the text of which is in Japanese. 



Cystoclonium purpurascens and Chordaria flagelliformis.t — 

 A. Henckel continues his observations on the anatomy and biology of 

 these two algse, begun in 1901. In this part of his paper he treats of 

 the morphology and anatomy of C. flagelliformis, describes its habit 

 and general characteristics, the mode of growth, and the various tissues, 

 assimilative, conducting, mechanical, &c. The structure is then com- 

 pared with that of Cystoclonium purpurascens, and general deductions 

 are made. 



Schimmelmannia ornata.J — A. Mazza discusses the geographical 

 distribution of this species and the possible causes for such distribution. 

 He remarks on its confinement within very narrow areas of coast-line 

 and the distance between these areas. The records of it being so few 

 and its abundance within these limits being so marked, the author 

 suggests that the plant requires certain nutriment only to be obtained 

 in few localities. On the Sicilian coast near Acireale, where it flourishes, 

 there is an abundant flow of fresh water rich in carbonates, especially 

 magnesia ; and this is suggested as a possible aid to the development of 

 the plant. It is supposed, from its isolation in this spot, to have been 

 drifted over from the shores of Morocco. Until further data are 

 gathered as to the general requirements and conditions of growth of 

 this alga in its various localities, no definite conclusions can be drawn. 

 The form is described and figured and the reasons given for regarding 

 JS. ornata as a perennial plant. 



Algae of North- Western America^ — W. A. Setchell and N. L. 

 Gardner publish a critical list of the algse of north-west America, for 

 the most part consisting of marine, but including also a certain number 

 of fresh-water species. The Desmidiacese and Diatoniaceaa are omitted, 



* Publications Fishery Bureau, Hokkaido Govt., Japan, 1902, 212 pp. and 37 pis. 



t Script. Bot. Hort. Univ. Petropol., six. (1902) 38 pp. (6 pis.) ; Hedwigia, xlii. 

 (1903) Beibl., p. 124. 



% Nuov. Notar., xiv. (1903) pp. 45-61 (1 pi.). See also Bend, e Mem. R. Ace. 

 Sci., &c, Acireale, ser, 3, i. No. G, pp. 6. 



§ Univers. Calif. Publ. Bot., i. (1903) pp. 165-418 (pis. 17-27). 



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