No. 3, December, 1920] PALEOBOTANY 181 



39 per cent of extinct forms and of the remainder 1"> per cent still exist in southern Japan. 

 Three of the extra Japanese forms are confined to the existing flora of southeastern North 

 America. There is an interesting discussion of the floral facies and its eco indicati 



as well as a review of the wide ranging Pliocene floras as shown by their presence throughout 

 the Northern Hemipshere. The two floras described are considered to be of about the same 

 age, that from Amakusa being, if anything, slightly younger than that from Mogi. Both are 

 taken to indicate slightly cooler climatic conditions than prevail at the present time in south- 

 ern Japan, and their age is considered to be late Pliocene. — E. W. Berry. 



1240. Fubber, E. Wandlungen in der Vegetations decke der Schweiz. [Changes in the 

 vegetation of Switzerland.] Viertelsjahrsschrift Naturf. Ges. Zurich. 64 Jg. 1919: iii-v. 

 1920. 



L241. Gbout, F. F., and Bbodebick, T. M. Organic structures in the Biwabik iron- 

 bearing formation of the Huronian in Minnesota. Amer. Jour. Sci. 48: 199-205. 1919. — 

 Describes organic remains from the pre-Cambrian rocks of Minnesota, including a new species 

 of Alga, Collcnia biwabikensis. — E. W. Berry. 



1242. Hesselmax, H. Om pollenregn pa hafvet och fjarrtransport af barrtradspolier. 

 [The rain of pollen on the sea and the wide distribution of the pollen of trees.] Geol. Foren. 

 Forh. 41: 89-108. 4 fig. 1919. 



1243. Iwasaki, C. A fundamental study of Japanese coal. Tech. Repts. Tohoku Imp. 

 Univ. Sendai 1 : 1-35. 8 pi. 1920. 



1244. Joxg.maxs, W. J. Stratigraphie van het Nederlandsch Productief Carboon. [Stratig- 

 raphy of the coal measures of Holland.] 250 p. Charts 14-27. Amsterdam. 1918. — This final 

 report of the commission for the investigation of the coal measures of Holland is devoted to 

 a detailed account of the stratigraphy as disclosed by underground exploration. There are 

 some lists of fossil plants, but the work will be chiefly useful to botanists for the location of 

 the numerous fossil plants described by the author in other publications. Its geological 

 value is great. — E. W . Berry. 



1245. Krausel, R. Nachtrage zur Tertiarflora Schlesiens. I. [Addendum to the Ter- 

 tiary flora of Silesia.] Jahrb. Preuss. Geol. Landes. fiir 1918, 39: 329-417. PI. 16-27. 1920.— 

 Records Macrosporium and Helicomia on Sequoia, a fern (Woodwardites), Torreya, Taxus, 

 Pinus, Taxodium, Sequoia, Libocedrus, Salix, Myrica, Pterodarya, Juglans, Carya, Carpinus, 

 Betula, Alnus, Castanopsis, Ulmus, Brasenia, Magnolia, Crataegus, Rubus, Potentilla, Acer, 

 Vitis, Trapa, Cornus, Nyssa, Hypericum, Hippuris, Carpolithus, and Symplocos from the 

 brown coal of Silesia. — E. W. Berry. 



1246. Kbausel, R. Ein Beitrag zur Kenntnis der Diluvialflora von Ingramsdorf in 

 Schlesien. [A contribution to the knowledge of the Pleistocene flora of Ingramsdorf in Silesia.] 

 Neues Jahrb. 1920, 1: 104-110. PL 3. 1920. — Figures a spot fungus with teleutospores on 

 fragments of Phragmites, fern sporangia suggestive of Polypodium vulgare, and Salvinia 

 nutans from a peat and loam deposit at Ingramsdorf in Silesia. — E. W. Berry. 



1247. Kbausel, R., and othebs. Die Pflanzen des schlesischen Tertiars. [The plants 

 of the Tertiary of Silesia.] Jahrb. Preuss. Geol. Landes. fiir 1917, 38 2 . 338 p., 26 pi. 1919. — 

 Silesia is a classic region for Tertiary plants, published work going back to the days of Volk- 

 mann's Silesia subterranea (1720) and several of Gceppebt's early works, commencing in 1S45, 

 were devoted to their elucidation. The present work is a more or less critical revision of what 

 is known of these floras. The leaves and fruits of the Betulaceae and Ulmaceae are discussed 

 by Reimaxn, a beginner in paleobotany, who was killed in the war; those of the conifers and 

 Fagaceae are discussed by E. Reichexbach; the Salicaceae, Aceraceae and remaining fami- 

 lies by F. Meyer; and the woods of the browncoal by W. Prill and R. Krausel. This last 

 part is the most important for although the part dealing with the leaves and fruit is an exceed- 



