353 SCIENCE PROGRESS 



Continuity, or From Electrons to Infinity. By P. S. G. Dubash, D.Sc, Phil.B., 

 Ph.M., F.S.P., F.B.E.A., F.P.C., Vice-President of the International 

 College of Chromatics, the Esperantic Consul for Karachi, Le Membre du 

 Conseil du Cercle d'Etudes Ethnographiques, Le Representant de la Societe 

 Internationale de Science, Philologie et Beaux- Arts en Karachi. Blackburn : 

 George Toulmin & Sons, Northgate ; London : Hickie, Borman & Woods, 

 36, Lime Street, E.C., 1917. (Pp.60.) Price is. 6d. net. 



Sull' Applicazione dei Metodi Psico-Fisici All' Esame dei Candidati All' Aviazione 

 Militare. Relazione di recerche sperimentali compiute per incarico del 

 Ministero della Guerra presentata al Congresso della Societa per il progresso 

 delle Scienze, Aprile 1917. Con 4 illustrazioni, 13 diagramma, 4 tabelle. 

 Milano : Edizione di Vita e Pensiero, 1917. By Agostino Gemelli, O.F.M., 

 Capitano medico. Premiata tipografia Agostino Colombo & Figli, Cusano- 

 Milanmo. (Pp. 38.) 



Diarsenides as Silver Precipitants. By Chase Palmer. Reprinted from Economic 

 Geology, Vol. XII. No. 3, April-May 1917. (Pp. 207-18.) 



Significant Mineralogical Relations in Silver Ores of Cobalt, Ontario. By Edson 

 S. Bastin. Reprinted from Economic Geology, Vol. XII. No. 3, April-May, 

 1917. (Pp. 219-36.) 



Soil Conditions and Plant Growth. By Edward J. Russell, D.Sc, F.R.S., Director 

 of the Rothamsted Experimental Station, Harpenden. Third Edition. 

 London : Longmans, Green & Co., 39, Paternoster Row, and New York, 

 Bombay, Calcutta, and Madras, 1917. (Pp. viii + 243, with diagrams.) 

 Price 6s. 6d. net. 



A Bibliography of British Ornithography from the Earliest Times to the end of 

 1912. Including Biographical Accounts of the Principal Writers and Biblio- 

 graphies of their Published Works. By W. H. Mullens, M.A., LL.M., F.L.S., 

 M.B.O.U., and H. Kirk Swann. To be issued in 6 bi-monthly Parts. 

 Part VI. Price 6s. each part. 



The Mosquitoes of North and Central America and the West Indies. By Leland 

 O. Howard, Harrison G. Dyar, and Frederick Knab. Vol. IV. Systematic 

 Description (in 2 Parts). Part II. Washington, D.C. : Published by the 

 Carnegie Institution of Washington, 191 7. (Pp. 525-1064.) Baltimore: The 

 Lord Baltimore Press, MD., U.S.A. 



The Biology of Waterworks. By R. Kirkpatrick, Assistant in the Department of 

 Zoology, British Museum, (Natural History). Economic Series, No. 7. 

 London : Printed by order of the Trustees of the British Museum, 1917. 

 (Pp. iv + 58, with 18 text figures.) Price is. net. 



Animal Micrology. Practical Exercises in Zoological Micro-technique. By 

 Michael F. Guyer, Ph.D., Professor of Zoology in the University of Wis- 

 consin, President (1916) the American Microscopical Society. With a chapter 

 on Drawing by Elizabeth A. Smith, Ph.D., Instructor in Zoology in the 

 University of Wisconsin. Revised Edition. Chicago : The University of 

 Chicago Press. (Pp. xi + 289.) Price gs. net. 



The Last Glaciation and the Submerged Forests. Reprinted from Journal of the 

 Torquay Natural History Society, 1917. By Major R. A. Marriott, D.S.O. 

 (Pp. 14.) 



The Biology of Dragonflies, Odonata or Paraneuroptera. By R. J. Tillyard, 

 M.A., B.Sc, F.L.S., F.E.S., Macleay Fellow in Zoology to the Linnean 

 Society of New South Wales. Cambridge : at the University Press, 191 7. 

 (Pp. xii + 396, with 4 plates.) Price 15^. net. 



Modern Man and his Forerunners. A Short Study on the Human Species, Living 

 and Extinct. By H. G. F. Spurrell, M.A., M.B., B.Ch., F.Z.S. London: 

 G. Bell & Sons, 1917. (Pp. xii + 192, with 5 illustrations.) Price 7s. 6d. net. 



The Causes of Tuberculosis, together with some Account of the Prevalence and 

 Distribution of the Disease. By Louis Cobbett, M.D., F.R.C.S., Uni- 

 versity Lecturer in Pathology. Cambridge: at the University Press, 1917. 

 (Pp. xvi 4- 707.) Price 21s. net. 



