CONTENTS OF N° 2m:— Fourth Series. 



XLIX. On the Phenomena of the Elevation and Subsidence of the 

 Surface of the Earth. By Captain F. W. Hutton, F.G.S., of the Geo- 

 logical Survey of New Zealand page 401 



L. On the Relation which the internal Resistance of the Battery and 

 the Conductivity of the Wire bear to the maximum Magnetizing Force 

 of an Electromagnet Coil. By G. K. Winter, F.R.A.S., Telegraph 



Engineer, Madras Railway * 414 



LI. On the Spectroscopic Reversion-Telescope. By F. Zollner. 



(With a Plate.) 417 



LII. Researches in Actino-Chemistry. — Memoir Second. On the 

 Distribution of Chemical Force in the Spectrum. By John William 

 Draper, M.D., LL.D., President of the Faculties of Science and Me- 

 dicine in the University of New York 422 



LIII. On the Nutrition of Muscular and Pulmonary Tissues in 

 Health and when affected with disease from Phthisis. By William 



Marcet, M.D., F.R.S 443 



LIV. On the Laws of Cooling. By MM. Jamin and Richard . . 457 

 LV. On the Specific Heat of Carbon at High Temperatures. By 



James Dewar, F.R.S.E., Lecturer on Chemistry, Edinburgh 461 



LVI. Notices respecting New Books : — The Strains in Trusses 

 computed by means of diagrams : with twenty examples drawn to 



scale. By Francis A. Ranken, M.A., C.E 467 



LVn. Proceedings of Learned Societies : — 



Royal Society : — Mr. R. Mallet on Volcanic Energy : an 

 attempt to develope its true Origin and Cosmical Relations; 

 Sir B. C. Brodie on the Action of Electricity on Gases. 468-473 

 Geological Society: — ]\Ir. R. Daintree on the Geology of 



the Colony of Queensland 474 



LVHL Intelligence and Miscellaneous Articles : — 



On the Collision of Elastic Bodies, and a numerical valuation pf 



its duration, by H. Schneebeli. ^ a^' • • ^^^ 



On the Spectrum of the Aurora, by Edward I. Holden. . r. .... 478 

 Observations relative to thepresence of Magnesium in the Chro- 

 mosphere of the Sun, by M. Tacchini 479 



It is requested that all Communications for this Work may be addressed, 

 post-paid, to the Care of Messrs. Taylor and Francis, Printing Office, Red 

 Lion Court, Fleet Street, London. 



