628 Algae. — Fungi, Myxom5xeten, Pathologie. 



Holmes, E. M., The Japanese Seaweed Industr3^ (The Phar- 

 maceutical Journal, p. 319 — 323. 11 fig-s. p. 346—349. 5 figs. Sep- 

 tember 22 a. 29. 1906.1 



The author treats of this subject under three headings, the first 

 of which is entitled "Agar Agar, or Japanese isinglass". The principal 

 ingredient of this preparation is stated to be Gelidimn polydadum 

 Sond. which is here figured, and the author points out that the 

 species in question was described by Sonder and figured b}^ Küt- 

 zing in Tab. Ph3'c. XIX. tab. 24d. Another alga is figured under 

 this name in the same work, vol. XVIII tab. 55 c, f, but that is a 

 different species and grows in the Adriatic. A figure is given in the 

 present paper of G. polydadum Sonder called in Japan Teiigusa, 

 though this name is also made to include other species of Gelidiiitn, 

 two of which are figured from Waka^^ama Dr. Marchand's paper 

 (Bull. Soc. Bot. de France 1880 p. 207.) is quoted and a long excerpt 

 is given from Mr. C. J. Davidson's report on the seaweed industry 

 of Japan, published in the Bulletin of the Imperial Institute IV 

 1906. p. 125—147. lUustrations of the plants used in the process are 

 given, together with notes concerning the different species referred 

 to. With respect to the uses of Kanten (Isinglas), the author states 

 that the Square sticks are chiefly used for making food products, 

 jellies, sweetmeats and the like; and the slender strips serve for 

 stiffening clothes as we use starch. 



The second part of this paper treats of "Japanese lodine". The 

 algae chiefl}^ used for the extraction of this substance are species 

 of Laminar ia , EcMo}iia, Sargassum and ArthrothamMus. The amount 

 of iodine present in these algae varies according to the species, and 

 also depends upon the time of year and the age of the alga. Tables are 

 given which shew this, as also some monthl}' analyses of Ecklonia 

 Cava. These Laminarieae are also largelj" used as food. The manner 

 of collecting them and the method employed in the preparation of 

 iodine are described. 



"Funori, or Japanese Seaweed glue," is the subject of the third 

 section of this paper, in which further quotations are made from 

 Mr. C. J. Davidson's report, with some criticism.s and remarks. 

 Figures are given of Gloiopeltis tenax and G. coUforinis. 



E. S. Gepp. 



Lemmermann, E., Beiträge zur Kenntnis der Planktonalgen. 

 XXII. Anabaena Levanderi Lemm. nov. spec. Synedra revaliensis 

 Lemm. nov. spec. (Ber. deutsch, bot. Ges. XXIV. Jahrg. Heft 10. 

 p. 535-538. 1906 [Ausgegeben 1907].) 



In einer von G. Schneider gefischten Planktonprobe aus dem 

 Obersee bei Reval konstatierte Verf. zwei neue Algen: Anabaena 

 Levanderi Lemm. aus der Verwandtschaft der Anabaena augstumalis 

 Schmidle und A. augstumalis var. marchica Lemm., und Synedra 

 revaliensis Lemm. nov. spec, zum Subgenus Belonastrum Lemm. 

 gehörig. Letztere Art kommt auch in Irland vor. Heering. 



Küster, E., Histologische und experimentelle Untersuchun- 

 gen über Intumeszenzen. (Flora. XCVI. p. 527. 1906.) 



Als geeignetes Objekt für das Studium des Einflusses äusserer 

 Bedingungen auf die Bildung von Intumeszenzen erwiesen sich die 



