vii 



Page 



The Physiology of Sugar in relation to the Blood. — No. 2. By F. W. Pavy, 

 M.D.;F.R.S. . .. 346 



Note on Dr. Burdon Sanderson's latest Views of Ferments and Germs. By 

 J. Tyndall, D.C.L., LL.D., F.R.S '.353 



Experimental Demonstration in respect to the Origin of Windings of Rivers 

 in Alluvial Plains, and to the Mode of Flow of Water round Bends of 

 Pipes. By Professor James Thomson, LL.D., D.Sc., F.R.S 356 



An Attempt to form Double Salts of Nitrate of Silver and other Nitrates. 

 By W. J. Eussell,Ph.D.,F.R.S., and Nevil Story Maskelyne, F.R.S 357 



On certain Definite Integrals. By W. H. L. Russell, F.R.S 359 



List of Presents 363 



On the Hindoo Division of the Octave, with some Additions to the Theory 

 of Systems of the Higher Orders. By R. H. M. Bosanquet, Fellow of St. 

 John's College, Oxford 372 



No. 183. — June 21, 1877 (continued). 



On some hitherto Undescribed Optical Properties of Doubly Refracting 

 Crystals. — Preliminary Notice. By H. C. Sorby, F.R.S., President of the 

 Royal Microscopical and of the Mineralogical Societies 384 



On the Foci of Lines seen through a Crystalline Plate. By G. G. Stokes, 

 M.A., Sec. R.S 386 



Notes on Physical Geology. — No. III. On the probable Age of the Conti- 

 nent of Asia and Europe ; and on the Absolute Measure of Geological 

 Time. By Rev. S. Haughton, M.D., D.C.L., F.R.S., Professor of Geology 

 in the University of Dublin 401 



On the Increase in Resistance to the Passage of an Electric Current pro- 

 duced on Wires by Stretching. By Herbert Tomlinson, B.A., Demon- 

 strator of Natural Philosophy, King's College, London 401 



No. 184.— November 15, 1877. 



The Bakerian Lecture. — On the Organization of the Fossil Plants of the 

 Coal-measures. — Part IX. On the latest Researches into the Organization 

 of the Fossil Plants of the British Coal-measures, especially of the Cata- 

 mites and Lepidodendra. By W. C. Williamson, F.R.S., Professor of 

 Natural History, Owens College, Manchester 411 



November 22, 1877. 



Remarks on the Attributes of the Germinal Particles of Bacteria, in Reply 

 to Prof. Tyndall. By J. Burdon Sanderson, M.D., LL.D., F.R.S 416 



