I. 



EEMARKS ON 



THE FORCES OF INORGANIC NATURE. 



BY DR. J. R. MAYER. 

 TRANSLATED BY J. C. FOSTER, B.A. 



n. 

 CELESTIAL DYNAMICS. 



BY DR. J. R. MAYER. 

 TRANSLATED BY DB. H. DEBUS, F.B.S. 



ra. 



BEMABKS ON 



THE MECHANICAL EQUIVALENT OF HEAT, 



BY DR. J. R. MAYER. 



TRANSLATED BY J. 0. FOSTEK, B.A. 



11* 



