180 PALEOBOTANY [Bot. Absts., Vol. VI, 



BACTERIA 



1232. Bergstrand, Hilding. On the nature of bacteria. Jour. Infect. Diseases 27: 

 1-22. 8 pi., IS fig. 1920. — The writer brings data and photographic evidence to prove that 

 "bacteria may be regarded as Fungi imperfecti developed through reduction of higher forms 

 and not as lowly primordial organisms to be placed at the very beginning of the organic 

 world." He confirms the theory of Zopf that the fission fungi, probably with some excep- 

 tions, are able to pass through different developmental stages. — Selman A. Waksm,an 



PALEOBOTANY AND EVOLUTIONARY HISTORY 



E. W. Beery, Editor 



1233. Arttffo, Caterina Samsonoff. Sopra due alghe calcaree di specie viventi, nel 

 Post-pliocene inferiore di Livorno. [Two existing species of calcareous algae in the older Pleis- 

 tocene of Leghorn.] Atti R. Accad. Lincei Rend. (CI. Sci. Fis. Mat. e Nat.) 28 1 : 359-362. 

 1919. — The two species of algae Lithophyllum papillosum (Zan.) Foslie /. Cystosirae (Hauck) 

 Foslie and Lithothamnium polymorphum (L) Aresch. /. tubercolata (Foslie) are reported from 

 the study of fossils in the collection of the R. Institute of Geology of Florence. — F. M. 

 Blodgelt. 



1234. Bertrand, Paul. Succession normale des flores houilleres dans le bassin houiller 

 du Gard. [Normal succession of the coal flora in the coal basin of Gard.] Compt. Rend. Acad. 

 Sci. Paris 170: 331-333. 1920. — The flora of these beds is discussed in its bearing on the stratig- 

 raphy of the region. — C. H. and W. K. Farr. 



1235. Braun-Blanquet, J. Uber die eiszeitliche Vegetation des siidlichen Europa. 

 [Upon the glacial vegetation of southern Europe.] Viertelsjahrsschrift Naturf. Ges. Zurich. 

 64 Jg. 1919: xli-xliv. 1920. 



1236. Braun-Blanquet, J. Die Fohrenregion der Zentralpentaler, insbesondere Grau- 

 biindens, in ihrer Bedeutung fur die Florengeschichte. [The Fir region of the Central Alpine 

 valleys, especially the Grisons, and its bearing on the floral history.] Viertelsjahrsschrift 

 Naturf. Ges. Zurich. 1918: 59-S6. 1920. 



1237. Brochman-Jerosch, H. Weitere Geschichtspunkte zur Beurteilung der Dryasflora 

 [Additional viewpoints in the interpretation of the Dryas flora.] Heim Festschrift Viertel- 

 jahrsscher Naturf. Ges. Zurich. 1919: 35-49. 1920. 



1238. Fleiszner, [ — ]. Die Bildung fossiler Kohlen im Zusammenhange mit Verwitter- 

 ungsvorgangen. [The formation of fossil coal in relation to processes of weathering.] Berg. u. 

 Hutten. Jahrb. 67: 1-13. 1919. 



1239. Florin, Rudolf. Zur Kenntnis der Jungtertiaren Pflanzenwelt Japans. [On 

 knowledge of the later Tertiary plant world of Japan.] Kgl. Svenska Vet.-Akad. Handl. 61: 

 1-71. 6 pi. 1920.— Fossil plants are described from Amakusa Island, Shimonoseki and Mogi 

 and an unknown locality, all in southern Japan. The two principal localities are those of 

 Amakusa and Mogi, the latter first made known by Nathorst some forty years ago, but the 

 age of which had never been conclusively settled beyond the fact that it was post-Miocene. 

 The Amakusa flora comprises representatives of the genera Taxodium, Juglans, Carpinus. 

 Fagus, Celtis, Magnolia, Liquidambar, Sorbus, Primus, Dictamnus, Rhus, Ilex, Acer, Aescu- 

 lus, Elaeocarpus, Tilia, Stuartia, Cornus, Clethra, Diospyros, Apocynum, Viburnum, Sym- 

 plocos?, Sophora?, Spiraea?. The Mogi flora contains the genera Taxodium, Salix, Fagus, 

 Ulmus, Schizandra, Liquidambar, Phellodendron, Acer, Zizyphus, Elaeocarpus, Tilia, Stu- 

 artia?, Cornus and Viburnum. Both are contained in a tuff and have a majority of species 

 in common. That from Amakusa has 35 per cent extinct forms and 48 per cent of its still 

 existing species are represented in the present flora of southern Japan. That from Mogi has 



