XVI 



ANGUSTINE HENRY, The Study of Trees Page 321 



C. S. COOPER and W. P. WESTELL, Trees and Shrubs of the 



British Isles, Native and Acclimatised 322 



PERCY GROOM, Remarks on the Oecology of Coniferae. . . . 322 



H. CLINTON-BAKER, Illustration of Conifers 326 



DAVID STEWART, Suggested Use of Abies nobilis for Planting up 



Blanks in Old and in Young Woods 326 



F. J. PHILLIPS, A Study of Piilon Pine 326 



Seed Experiments with Pinus sylvestris 327 



HENRY M. CADELL, Sitka Spruce. On the Growth of the Sitka 



Spruce and other Trees in Linlithgowshire and Stirlingshire. 328 

 JOHN D. CROZIER, The Sitka Spruce as a Tree for Hill Planting 



and General Afforestation 328 



\V. MACKENZIE, Underplanted Larch Plantations at Novar in 



Scotland 329 



D. STEWART, Effects of Frost on Plants of Larix europaea and 



Larix leptolepis compared 329 



W. D. WHELLENS, The Japanese Larch versus the European 



Larch 330 



C. E. Moss, British Oaks 330 



A. HENRY, Hybridation of Elms 331 



R. ZON, Determining the Time of Year at which Timber was Cut. 331 

 R. H. Rew, Importation of Wood and Timber in Great Britain 



in 1909 33* 



EDWARD KINCH, Composition of Saw-dust 332 



C. N. FORREST, Preservatives for Wood Paving Blocks . . . 333 



Euphorbia Latex for Preventing Corrosion 333 



Acetone: a Product of Wood-distillation: Increasing Demand in 



Great Britain 335 



W. G. SMITH, Synopsis of the British Basidiomycetes .... 334 



Cultivated and Poisonous Mushrooms 334 



Edible and Poisonous Varieties of Fungi 334 



F. L. STEVENS and HALL, Variation of Fungi due to Environment 335 



A. H. R. BULLER, Researches on Fungi 335 



W. W. FORD, The Distribution of Poisons in the Amanitas . . 336 



T. W. SANDERS, Mushrooms and their Cultivation 337 



XXX Rubber Plants and Industry. Camphor, Gums, etc. 



Experiments with Eucommia ulmoides near Norwich 339 



The World's Production and Consumption of Rubber .... 339 



PHILIP SCHIDROWITZ, The India Rubber Industry 341 



C. SIMMONDS, Substitutes for Rubber 342 



XXXI Weeds and Diseases of Plants. 



Law and Custom in regard to Noxious Weeds in English Farm- 

 ing. The Agricultural Legislation of 1909. 343 



JOHN PERCIVAL, " Couch or Twitch " 344 



