I. 



BEMARKS ON 



THE FORGES OF INORGANIC NATURE. 



BY DR. J. R. MAYER. 

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



n. 

 ON CELESTIAL DYNAMICS. 



BY DR. J. R. MAYER. 

 TBANSLATED BY DB. H. DEBUS, F.K.S. 



ra. 



EEMARKS ON 



THE MECHANICAL EQUIVALENT OF HEAT, 



BY DR. J. R. MAYER. 

 TBANSLATED BY J. 0. FOSTEE, B.A. 



11* 



