556 SCIENCE PROGRESS 



Berry also published an important memoir on the Upper 

 Cretaceous of the Eastern Gulf {U.S. Geol. Surv. Profess., 

 paper cxii, pp. 1-141, pis. i-xxxiii, 191 9), in which not only 

 a large number of new species of Angiospermic leaves (and 

 others) were described and finely illustrated, but the distribution 

 in time and space and the ecology of the deposits were dealt 

 with in the thorough way which we are learinng to expect 

 from Berry. 



The Lower Cretaceous is represented by further wofk 

 from Walkom, who has for some time past been publishing on 

 the too-long-neglected fossil floras of Australia. In " The 

 Floras of the Burrum and Styx River Series " Walkom described 

 many species, and from their nature clearly demonstrated that 

 the deposits were of early Cretaceous, probably Neocomian age, 

 and not Triassic, as they had been long considered. As the 

 Burrum deposits contain commercially valuable coal, the 

 determination of their correct stratigraphic position is not only 

 of scientific, but of practical importance. In his presidential 

 address on " Queensland Fossil Floras " {Proc. Roy. Soc. 

 QueensL, vol. xxxi, no. i, 1919) Walkom emphasises the value 

 of accurate palaeobotanical work in clearing up doubtful points 

 in stratigraphy. 



The Hor sandstone of the Lower Lias of Sweden, rendered 

 so famous by Nathorst's wonderful memoirs on Dictyophyllnyn, 

 Clathropteris, Nilssonia, and other plants, has been discussed 

 further by Antevs, who gave a monographic account of all the 

 further remains collected at various times, and complete lists 

 of the species and their distribution elsewhere {K. Svensk. 

 vetensk. Handl., vol. lix, no. 8, 19 19, pp. 1-17, pis. i-vi). 



The Carboniferous has received the attention of various 

 authors. Renier dealt with the coal measure deposits of 

 Belgium {Ann. d. Mines Belg., 1920, vol. xxi), and published a 

 comprehensive and valuable bibliography of the entire literature 

 on the subject {Ann. d. Mines Belg., 1920, vol. xxi, pp. 421-680). 

 The same author published also a short note on discoveries on 

 the rare Lepidodendroid genus Omphalophloios {Ann. Soc. Sci. 

 Bruxelles, 1920, pp. 1-7). Bonnier, in " Notes Pal^ophyto- 

 logiques sur le Carbonifere du Bassin de la Basse-Loire " {Rev. 

 gen. bat., vol. xxxi, 1919, pp. 1-15, pi. iii) gave descriptions 

 of a small number of species, and some notes of general interest. 

 He dealt in the following year {Rev. gen. hot., vol, xxxii, 1920, 

 pp. 1-13, pis. V and vi) with the fructifications of the Culm of 

 Mouzeil, where the deposits are rich in impressions of a variety 

 of small seeds. 



Carpentier announced the discovery of the fructifications 

 (hitherto unknown) of Sphenopteris herhacea ; the fertile pinnules 

 having reduced lobes not unlike those of the Archaeopteridese 



