II.—On some Fossil Coniferous Fruits

Population Ecology of Some Warblers of Northeastern Coniferous Forests

Growth ring analysis of fossil coniferous woods from early cretaceous of Araripe Basin.

Growth ring analysis on silicified coniferous woods from the Missão Velha Formation (Araripe Basin - Brazil) has yielded important information about periodicity of wood production during the Early Cretaceous in the equatorial belt. Despite warm temperatures, dendrological data indicate that the climate was characterized by cyclical alternation of dry and rainy periods influenced by cyclical pre...

The Cost of Displacing Fossil Fuels: Some Evidence from Texas

Although technological progress can alter the relative costs of different energy sources, fossil fuels inevitably will be displaced as depletion raises their costs and makes them uncompetitive. They may be displaced sooner if they are taxed to internalize negative externalities. Currently, wind generation or nuclear power, supplemented by bulk electricity storage, are the most feasible alternat...

Some Fossil Plants of Early Devonian Type from the Walhalla

S of the PAPERS printed in the PHILOSOPHICAL TRANSACTIONS of the ROYAL SOCIETY of LONDON. Yols. 1 to 6 (1800-1854), 8vo, at 10s. each. (Vola. 3, 4 and 6 out of Print.) PROCEEDINGS of the ROYAL SOCIETY of LONDON, being a continuation of the foregoing Series. Vols. 8 to 14, and 16 to 74, 21s. each, cloth. Yol. 75 is composed of Obituary Notices of Fellows Deceased, 1898-1904. Price 15s. With Vol....

CHEMICAL COMPOSITION AND ANTIMICROBIAL ACTIVITIES OF ESSENTIAL OILS OF SOME CONIFEROUS PLANTS CULTIVATED IN EGYPT

Family Cupressaceae is the largest coniferous plant family. Essential oils of many species belonging to family Cupressaceae are known to have several biological activities specially antimicrobial activity. The essential oils from aerial parts of Calocedrus decurrens Torr., Cupressus sempervirens stricta L. and Tetraclinis articulata (Vahl) Mast. were prepared by hydrodistillation. The chemical ...