CONTENTS OF VOL. XIV.—FOURTH SERIES. Vv 
Page 
Mr. A. Cayley on the Conditions for the Existence of given : 
Systems of Equalities among the Roots of an Equation. 218 
Mr. A. Cayley’s Tables of the Sturmian Functions for Equa- 
tions of the Second, Third, Fourth and Fifth Degrees.. 219 
Prof. Bunsen and Dr. Roscoe on Photo-chemical Induction. 220 
Mr. C. G. Williams on some of the Products of the De- 
structive Distillation of Boghead Coal......--+---+- 223 
Dr. Herapath on the Optical Characters of certain Alkaloids 
associated with Quinine, and of the Sulphates of their 
Todo-compounds. |... . 00. s))siet seek we se ee einen ne ee 224 
Mr. J. P. Joule on the Thermo-electricity of Ferruginous 
Metals, and on the Thermal Effects of stretching Solid 
Bates ahavedcertinwees ly el Mesh acec at. 226 
Mr. W. Crookes on the Photography of the Moon...... 227 
On the Calculation of Vapour-densities, by Hermann Kopp .. 284 
On the Formation of Water by Platinum Electrodes, by M. Bertin. 235 
On the Optical Properties of Magnetic Bodies.—Second Note, 
Diy, MES Verdot istic Vite. tates aie eda ite ie ofS OE iO sails 236 
On the Improved Induction Coil, by Jonathan N. Hearder .. 287 
On a modified form of Ruhmkorff’s Induction Apparatus, by E. 
“| es eRe PE a ee Ce aC LT 239 
NUMBER XCIII.—OCTOBER. 
Prof. Huxley on the Structure of Glacier a ee ee eee 
The Rev. H. Moseley on certain Elementary Formule, &c. .. 260 
Dr. Meyer on the Gases of the Blood .......-++++++ +155 ++ 263 
Dr. Atkinson’s Chemical Notices from Foreign Journals .... 269 
Mr. J. J. Waterston on the Deviation from the Primary Laws of 
Elastic Fluids indicated by the Experiments of M. Regnault 
and of Messrs. Thomson and Joule .... yt ee yi) 
Dr. Schunck on the Occurrence of Indigo-blue in Urine ri Aptis: 
Proceedings of the Royal Society :— 
Major- General Sabine on what the Colonial Magnetic Ob- 
servatories have accomplished ......-++-++++-_ee0: 297 
Dr. Marcet on the Immediate Principles of Human Excre- 
ments in the Healthy State ......------ +++ <P 310 
Mr. C. V. Walker on a System of Train-Signalling .... 312 
Notes on Froth, by Dr. Gladstone. Hels i.e se cave er are a 314 
Note on Capillary Action, by G. Wertheim......02.+ tenes 315 
On the Improved Induction Coil, by C. A. Bentley ......-- 319 
NUMBER XCIV.—NOVEMBER. 
Prof. Draper on the Influence of Light upon Chlorine, and 
some remarks on Alchemy......-.+eeesseeeeeere cette 321 
