CONTENTS of N° 239.— Fourth Series. 



XLVII. On the Second Fundamental Theorem of the Mechanical 

 Theory of Heat. By R. Clausius, Professor of Physics in the Uni- 

 versity of Wiirzburg page 405 



XLVIII. Example of the Application of a Graphical Method to the 

 Problem of Rectilinear Motion in a Homogeneous Resisting Medium. 



By C. W. Merrifield, F.R.S 420 



XLIX. On a New Thermometer for measuring Temperatures above 

 the Boiling-point of Mercury. By M. Berthelot. (With a Plate.) 423 



L. On the Periodic Change of Climate caused by the Moon. By 

 Charles V. Zenger, Professor of Natural Philosophy at the Poly- 

 technic School at Prague 433 



LI. On the Dynamical Theory of Heat. By Joseph Gill, Esq. 



(With a Plate.) 439 



LII. On the least Electromotive Force by which a Galvanic Lumi- 

 nous Arc can be produced. By E. Edlund 441 



LIII. On Grove's Battery. By G. W. Wigner, F.R.A.S 448 



LIV. Chemical Notices from Foreign Journals. By E. Atkin- 

 son, Ph.D., F.C.S 451 



LV. Proceedings of Learned Societies : — 

 Royal Society : — M. A. L.O. Des Cloiseatjx's New Researches 

 on the Dispersion of the Optic Axes in Harmotome and Woh- 

 lerite, proving these Minerals to belong to the Clinorhombic 

 (Oblique) System ; Mr. C. W. Merrifield on the Law of the 

 Resistance of the Air to Rifled Projectiles; Dr. A. Dupre and 

 Mr. F. J. M. Page on the Specific Heat of Mixtures of Alco- 

 hol and Water 461-465 



LVI. Intelligence and Miscellaneous Articles : — 



On the Relation which exists between the Cohesion of a Com- 

 pound Body and the Cohesions of its Elements, by M. J. 



Moutier .... 466 



On Solar Radiation, by M. Soret 469 



On the Internal Work of Gases, by M. A. Cazin 470 



Index 473 



With Title-page, Contents, &c. 



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. 



