358 THE AMERICAN NATURALIST. [Vol. XXXVII. 



Professor Spalding's presidential address before the Society for 

 Plant Morphology and Physiology, dealing with the rise and progress 

 of ecology, is published in Science of February 6th. 



An address before the Western Railway Club on Timber Preser- 

 vation, well illustrated with figures of botanical interest, has been 

 described by Dr. von Schrenk. 



An account of silkworm food plants, well illustrated, has been pub- 

 lished by Oliver as Bulletin 34 of the Bureau of Plant Industry of the 

 Department of Agriculture. 



An illustrated account of plants injurious to sheep, based on a 

 Bulletin of the Nevada Experiment Station, is contained in The 

 Pacific Rural Press of February 7th. 



An article on electromotive force in plants, by A. B. Plowman, is 

 published in the American Journal of Science for February. 



No. 18 of Dr. Holm's Studies in the Cyperaceae, dealing with Carex 

 fusca and C. bipartita, is published in the American Journal of Science 

 for February. 



Among other interesting botanical articles in Volume XXXV of 

 the Journal and Proceedings of the Royal Society of New South Wales 



tain chemical constituents in the oils of the Eucalypts, by R. T. Baker 

 and H. G. Smith. 



A conspectus of the flora of Greece, by E. De Halacsy, — in the 

 form of a two-volume octavo, — has recently been issued from the 

 Engelmann press of Leipsic. 



A good plate of detailed figures of Prunus besseyi is contained in 

 Volume III, Fascicle 7, of the /cones Selectee Horti Thenensis. 



Under the editorship of Professor Sargent a new serial entitled 



ligneous plants, prepared chiefly from material at the Arnold Arbore- 

 tum of Harvard University, has been launched from the press of 

 Houghton, Mifflin and Company. The first part, issued November 

 26, 1902, contains in addition to other things a considerable number 

 of new species of Crataegus not included in the Silva, and a new genus 

 of Scrophulariacese Faxonanthus, with a single species, F. pringlei 

 Greenm. In form and typography Trees and Shrubs agrees with 

 Professor Sargent's Silva of North America, and the plates are as in 



