\i CONTENTS 01 VOL. XI. — FIFTH BIRIES. 



NUMBEB LXIX.— MAT. 



Page 



MM. Struve and Dollen od the Correction of Latitudes for 



il attraction 313 



Prof. 0. Reynolds on certain Dimensional Properties of Matter 



in the Qaseoua State 335 



Mr, 0. A'. Boys on an [ntegrating-Machine. (Plate VIII.). . 342 

 Dr. 0. \l. A. Wrighl on the Determination of Chemical Affi- 

 nity in terms of Electromotive Force. — Part IV 348 



Mr. EL T. G-lazebrook on a Method of Comparing the Electrical 



Capacities of two Condensers 370 



Mr. E. H. Cook on a convenient Term expressing the Change 



from Radiant Heat and Light into Sound 377 



Mr. \V. R. Browne on Action at a Distance 379 



I )r. ( !. ,J . Stoney on the Physical Units of Nature 381 



Mr. 8. T. Preston on the Importance of Experiments in rela- 

 tion to the Mechanical Theory of Gravitation 391 



The Effect of Great Cold upon Magnetism, by John Trowbridge 393 

 On the Galvanic Conductivity of Heated Gases, by M. 11. Bloncllot 395 

 On au Acoustic Phenomenon noticed in a Crookes Tube, by 

 Charles It. Cross 396 



NUMBER LXX.— JUNE. 



Mr. E. T. Glazebrook on the Molecular Vortex Theory of Elec- 

 tromagnetic Action ... 397 



Messrs. Rowland and Nichols on the Electric Absorption of 

 Crystals. (Plate IX.) 414 



Mr. R. H. M. Bosanquet on the Beats of Consonances of the 

 Formal. (Plates IV.- VII.) _ 420 



Dr. A. Macfarlane's Analysis of Relationships 436 



Mr. A. Tribe on an Electrochemical Method of Investigating 

 the Field of Electrolytic Action 446 



Messrs. Watson and Burbury on the Law of Force between 

 Electric Currents 451 



Messrs. Abney and Festing on the Transmission of Radiation 

 of Low Refrangibility through Ebonite 466 



Notices respecting New Books : — 



Dr. E. Goldstein's Eine neue Form elektrischer Absto- 



ssung. (A New Kind of Electric Repulsion.) 469 



Mr. E. B. Elliott on Williamson's Integral Calculus .... 473 



Note by Mr. R. Shida on his Article (Phil. Mag. Dec. 1880), 

 " On the Number of Electrostatic Units in the Electromag- 

 netic Unit " 473 



On the Principle of the Conservation of Electricity, by G. 

 Lippmann 474 



On a new Form of Galvanometer for Powerful Currents, by 

 Professor C. F. Brackett, College of New Jersey 476 



