VI t 



No. 306. February 4, 1892. 



Page 



On the New Star in Auriga. Preliminary Note. By J. Norman 

 Lockyer, F.R.S " 407 



Note on the Energy absorbed by Friction in the Bores of Rifled Guns. 

 By Captain Noble, C.B., F.R.S., &c. (late Royal Artillery) 409 



On the Thermal Conductivities of Crystals and other Bad Conductors. 

 By Charles H. Lees, M.Sc., late Bishop Berkeley Fellow at the Owens 

 College, Manchester , 421 



On the Mechanical Stretching of Liquids : an Experimental Determina- 

 tion of the Volume-Extensibility of Ethyl Alcohol. By A. M. 

 Worthington, M.A 423 



List of Presents 425 



February 11, 1892. 



Note on the Spectrum of Nova Aurigse. By J. Norman Lockyer 

 F.R.S 431 



Contributions to the Physiology and Pathology of the Mammalian Heart. 

 (From the Cambridge Pathological Laboratory.) ByC. S. Roy, M.D., 

 F.R.S., Professor of Pathology, and J. O. Adami, M.A., M.B., Fellow 

 of Jesus College, Cambridge , 435 



The Role played by Sugar in the Animal Economy. Preliminary Note 

 on the Behaviour of Sugar in Blood. By Vaughan Harley, M.D 442 



List of Presents 443 



February 18, 1892. 



The Nature of the Shoulder Girdle and Clavicular Arch in Sauropterygia 

 By H. G. Seeley, F.R.S ........ ....'.. 446 



On the Origin from the Spinal Cord of the Cervical and Upper Thoracic 

 Sympathetic Fibres, with some Observations on White and Grey Ranri 

 Communicantes. By J. N. Langley, M.A., F.R.S., Fellow and Lec- 

 turer of Trinity College, Cambridge 445 



On the Relative Densities of Hydrogen and Oxygen. II. By Lord 

 Rayleigh, Sec. R.S 443 



List of Presents 453 



February 25, 1892. 



Preliminary Note on Nova Aurigaj. By William Huggins, D.C.L., 

 LL.D., F.R.S., and Mrs. Huggins 465 



Note on the New Star in Auriga. By J. Norman Lockyer, F.R.S 466 



On the Organisation of the Fossil Plants of the Coal-Measures. Part 

 XIX. By W. C. Williamson, LL.D., F.R.S., Professor of Botany in 

 the Owens College, Manchester _ 4^9 



On Biologic Regions and Tabulation Areas. By C. B. Clarke, F.R.S 472 



The Electric Organ of the Skate : Observations on the Structure, Rela- 

 tions, Progressive Development, and Growth of the Electric Organ of 

 the Skate. By J. C. Ewart, M.D., Regius Professor of Natural 

 History, University of Edinburgh 474 



List of Presents 476 



