LH 



culation of the Pregnant Uterus and its Contents in Woman. "William 

 Marcet: A Summary of an Inquiry into tlie Function of Resperation at 

 Various Altitudes on the Island and Peak of TeneriflFe. F. W. Pavy: 

 Furthers Researclies on the Physiology of Sugar in relation to the Bload. 

 Vol. XXIX. No. 195. 



T. E. Thorpe: A Magnetic Survey of the Fortieth Parallel in 

 North America between the Atlantic Ocean and the Grreat Salt Lake 

 Utah. W. D. Niven. On Certain Definite Integrals occuring in Spherical 

 Harmonie Analysis. Joseph P restwich: On the Origin of the Parallel 

 Roads of Lochaber, and their bearing on other Phenomena of the Glacial 

 Period. Walliam Spottiswoode and S. Fletscher Moulton : On the 

 Sensitive State of Electrical Discharges through Rarefied Gases. Charles 

 Tomlinson: On the Action of Solid Nuclei. E, W. Creak : On the 

 Results of the Magnetical Observations made by the Officers of the Arctic 

 Expedition, 1875 — 76. William Ellis: On the Relation between the 

 Diurnal Range of Magnetic Declination and Horizontal Force, as observed 

 at the Royal Observatory, Green wich , during the years 1841 to 1877, 

 and the Period of Solar Spot Frequency. J. Norman Lokyer: Note on 

 a recent Communication by Messrs Liveing and Dewar. A. Gornu: Sur 

 la Limite Ultraviolette du Spectre Solaire. D. E. Hughes: On an In- 

 duction-Currents Bailance, and Experimental Researches made therewith. 

 Benjamin Ward Richardson: Some Researches with Professor Hu- 

 ghes' new Instrument for the Measurement of Hearing : the Audiometer. 

 Derselbe : Note on the luven tion of a Method for making the Move- 

 ments of the Pulse Audible by the Telephon: the Sphygmophone. Lord 

 Ragleigh: On the Capillary Phenomena lets. C. Niven: On the Con- 

 duction of Heat in Ellipsoids of Revolution. Richard C. Shettle; On 

 a New Method of Investigating the Magnetic Lines of Force in Magnets, 

 demonstrating the Obliquity of the Equator and Axis of Bar Magnets. 

 Balfour Stewart and William Dodgson : Preliminary Report to 

 the Committee on Solar Physics on a Method of Detecting the Unknown 

 Inequalisies of a Series of Observations. Noble and Abel: Researches 

 on Esplosives, No. IL J. Norman Lockyer : Note on the Spectrum of 

 Sodium. 



(Philosophical Transactions). 

 Vol. 167. — Part IL 



William Stottiswoode: On Hjrperjacobian Surfaces and Curves. 

 John Casey: On a new Form of Tangential Equation. A. Cayley : On 

 the Bicircular Quartic. — Addition to Professor Caseys Memoir „On a 

 new Form of Tangential Equation", Edward Sabine: Contributions to 

 Terrestrial Magnetism. FleemingJenkin: On Friction between Surfaces 



