IV 



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Sur la Diffraction des Ondes Electriques : a propos d'un Article de 

 M. Macdonald. Par H. Poincaru, For. Mem. R.S 42 



The Measurement of Tissue Fluid in Man. Preliminary Note. By 

 George Oliver, M.D., F.R.C.P. Communicated by Sir Lauder 

 Brunton, F.R.S 52 



On Reptilian Remains from the Trias of Elgin. By G. A. Boulenger, 

 F.R.S. (Abstract) 55 



The Bending of Electric Waves round a Conducting Obstacle : 

 Amended Result. By H. M. Macdonald, M.A., F.R.S 5.9 



On the Structure of Gold Leaf and the Absorption Spectrum of 

 Gold. By J. W. Mallet, F.R.S., Professor of Chemistry in the 

 University of Virginia. (Abstract) 68 



No. 478. July 31, 1903. 



Note on the Effect of Extreme Cold on the Emanations of Radium. 

 By Sir William Crookes, F.R.S., and Professor James Dewar, F.R.S. 69 



The Evaporation of Water in a Current of Air. By Edgar Philip 

 Perman, Assistant Lecturer in the University College of South 

 Wales and Monmouthshire. Communicated by Professor E. H. 

 Griffiths, F.R.S 72 



The Spectra of Neon, Krypton, and Xenon. By E. C. C. Baly, 

 Lecturer on Spectroscopy in University College, London. Communi- 

 cated by Sir William Ramsay, K.C.B., F.R.S. (Abstract) 84 



On a Remarkable Effect produced by the Momentary Relief of Great 

 Pressure. By J. Y. Buchanan, F.R.S. (Plates 1 and 2) 88 



The Bionomics of Convoluta Roscoffetisis, with special Reference to its 

 Green Cells. By F. W. Gamble, D.Sc., Owens College, Manchester, 

 and Frederick Keeble, M.A., University College, Reading. Com- 

 municated by Professor S. J. Hickson, F.R.S 93 



A Method for the Investigation of Fossils by Serial Sections. By 

 W. J. Sollas, D.Sc., LL.D., F.R.S., Professor of Geology and Palaeon- 

 tology in the University of Oxford. (Abstract) 98 



An Account of the Devonian Fish, Palosospondylus Qunni, Traquair. 

 By W. J. Sollas, D.Sc., LL.D., F.R.S., Professor of Geology and 

 Palaeontology in the University of Oxford, and Igerna B. J. Sollas, 

 B.Sc., Lecturer in Zoology, Newnham College, Cambridge. (Abstract) 98 



On the Optical Activity of the Nucleic Acid of the Thymus Gland. By 

 Arthur Ganigee, M.D., LL.D., F.R.S., Emeritus Professor of Physio- 

 logy in the Owens College, Victoria University, and Walter Jones, 

 Ph.D., Associate Professor of Physiological Chemistry in the Johns 

 Hopkins University 100 



New Investigations into the Reduction Phenomena of Animals and 

 Plants. Preliminary Communication. By J. B. Farmer, F.R.S., and 

 J. E. S. Moore, A.R.C.S 104 



Evolution of the Colour- Pattern and Orthogenetic Variation in certain 

 Mexi .in S|nvifs of Li/.irds. \\-jth Adaptation to their Surroundings. 

 By IJaus Gsidow, F.R.S. (Plates 35). 109 



