Physiologie. — Palaeontologie. 169 



of the porous clay cup described by Livingston (Plant World, XI. 

 p. 39—40. 1908.) whereby the moisture supply of a potted plant may 

 automatically be kept approximatelj'^ uniform during long periods of 

 time. The results indicate that plants may be expected to grow as 

 vigorously and remain in as good condition when watered by the 

 porous clay cup as when supplied in the usual way. A partial 

 sealing of the pot, either by paraffining or covering the soil surface 

 with modeling clay was apparently advantageous. The roots of 

 plants automatically watered were more branched and much more 

 uniformly distributed through the soil mass than in pots watered 

 in the ordinary way. Moore. 



Howard, A, and G. L. C, The fertilising influence of Sun- 

 light. (Nature 2103. p. 456—457. 1910.) 



It is a practice in the Indo-Gangetic plains to expose the alluvial 

 soils to the Indian sun during April and May; the result is an 

 increased productivity of the soil, equal to that of a nitrogenous 

 manuring. The authors point ont that this is an instance of an an- 

 cient practice in agriculture for which the recent investigations of 

 Russell and Hutchinson probably provide an explanation. Here 

 in practice the soil is exposed to a high temperature, so that orga- 

 nisms which interfere with the development of soil-bacteria are 

 checked while the bacteria remain and develope with greater acti- 

 vity. The authors propose to carry on experiments at Pusa to 

 test this. ' W. G. Smith. 



Berry, E. W., A Cretaceous Lycopodium. (Amer. Journ. Sei. 

 IV. 30. p. 275-276. Taf. 1. 1910.) 



A species of Lycopodium based upon fruiting Spikes very similar 

 to those of certain modern forms of Lycopodium is described from 

 impressions which are abundant in fhe Upper Cretaceous ciays 

 of South Carolina. Berry. 



Berry, E. W., Contributions to the Mesozoic Flora of 

 the Atlantic Coastal piain. VI. Georgia. (Bull. Torrev bot. 

 Club. XXXVII. p. 503—511. fig. 1, 2. 1910.) 



In continuation of previous studies of the coastal piain Cretaceous 

 flora the writer lists 32 species from Upper Cretaceous deposits in 

 the State of Georgia. These are for the most part well known and 

 widely distributed Upper Cretaceous types. Several new species 

 are indicated and a remarkably large Euphorbiaceous form is 

 described as Manihotites geovgiana. The present is the first record 

 of Cretaceous plants in Georgia. They are now known from every 

 State along the Atlantic seaboard from New York southward with 

 the exception of Florida which was not in existence during Cre- 

 taceous times, the Cretaceous shoreline swinging to the west at 

 Columbus, Georgia and extending north westward across Ala- 

 bama into northeastern Mississippi. Berry. 



Berry, E. W., An Eocene Flora in Georgia and the indi- 

 cated physical conditions. (Bot. Gaz. L. p. 202—208. Tat. 

 1. 2 1910.) 



New species of Acvostichum, Arundo, Castanea, Conocarpus. 



