Physiologie. — Palaeontologie. 617 



raten zur Bekämpfung von Schädlingen untersuchte Verf. die Wir- 

 kung eines verschiedenen Kupfergehaltes im Boden auf das Wachs- 

 tum von Senf- und Haferpflanzen. Die Versuche wurden sowohl 

 in einem Erdesandgemisch, wie in Gartenerde, Tonboden und rei- 

 nem Sand, der mit Nährlösung getränkt war, vorgenommen. Es zeigte 

 sich, dass bei Senf (SiiiapisJ bereits ein Gehalt von 0,1'^/ o an Kup- 

 fersultat die Menge der geernteten Trockensubstanz herabsetzt, 

 während der Hafer (AvenaJ widerstandsfähiger ist und erst von 

 0,P/oo ^b ^^^^ Schädigung erfährt. K. Snell (Bonn). 



Arber, E. A. N., A note on some fossil plants from New- 

 foundland. (Proc. Cambridge Phil. Soc. XV. 5. p. 390-392. 

 2 textfigs. 1910.) 



With the exception of Sir William Dawson's Upper Carbonife- 

 rous species, fossil plants have not been known from Newfound- 

 land. The author now records the discovery of impressions of two 

 species, one of which he identifies as SpJienophylliini tenerrimitm 

 Stur. The other species is probably new, and is represented by 

 large fan-shaped leaves with radiating nerves: these resemble some 

 species of Psyginophyllnni. No geological evidence of the age of the 

 plant containing beds is given, but from the presence of 5. tener- 

 riniimi the author concludes that they are probably Lower Carbo- 

 niferous. M. C. Stopes. 



Gordon. W. T., On a new species of Pkysostoma from the 

 Lower Carboniferous Rocks of Pettvcur (Fife). (Proc. 

 Cambridge Phil. Soc. XV. 5. p. 395—397. 191Ö.) 



The author describes some poorly preserved sections of a 

 seed which may prove to be a new genus, but which he provisionall}' 

 places in the genus Physostoma as defined by Oliver. There are no 

 illustrations. From the description of the Single specimen it appears 

 that the seed somewhat resembles Conostoma ovale, but is rather 

 larger and more rounded than that species; it is also compared 

 with the genus Lageiiostoina because though the tentacular proces- 

 ses at the apex are free, they clasp the pollen Chamber more tightly 

 than in the hitherto described PJiysostoma. The specimen is from 

 the Calciferous Sandstone of Pettycur, and was found in sections 

 containing stems of Heteraugiuni and also seeds of Conostoma ovale. 



M. C. Stopes. 



Gordon, W. T., On the relation between the fossil Osrmin- 

 daceae and the Zvgopterideae. (Proc. Cambridge Phil. Soc. XV. 5. 

 p. 398—400. 1910.)" 



A Short consideration of the recent views on the nature of the 

 vascular tissue in, and the phylogeny of, the OsmuMdaceae, conclu- 

 ding with the view that this group and the Zygopterideae diverged 

 from a common stock, and that the latter named group departed 

 from the parent stock at a geologically earlier date than the Os- 

 miindaceae. M. C. Stopes. 



Lillie, D. G., On Petrified Plant Remains from the Upper 

 Coal Measures of Bristol. (Proc. Cambridge Phil. Soc. XV. 5. 

 p. 411—412. 1910.) 



This note records the discovery öf petrified material of stems 



