Miscellaneous Intelligence. 311 



the motion is at its minimum — that is, in com- 

 eptional resist .-nice 



— whereas the utmost economy is produced i 



tion of working- when the velocity of the power-absorbing nearly 



."epulis that of the current-producing machine." 



He next touched on the deposition of metals by the electric 

 currents; heating and lighting by electricity; the relative values 

 >f gas and steam as motive powers, under which the gas orcaloric 

 Migine is stated " to combine the condition most favorable to the 

 ittainment of maximum results.' 1 and that kt it may reasonably be 

 supposed that the difficulties still in the way of their application 

 >n a large scale will gradually be removed ;" the ways of improv- 

 ing steam ships and their equipment; the deep-sea sounding 



leering projects and accomplishments. 



Mr. Siemens closed with remarks on the progress now making 

 oward a clearer conception of the condition of matter when par- 

 icles are left some liberty to obey individually the forces brought 



his own, in a paper real March last before the 1 

 " 1. That aqueous vapor and carbon compounds a 



t the effect of solar rotation is to draw in dissociated 

 .on the polar surfaces, and to eject them after combus- 

 aken place back into spare cquatorially. 



solar disturbances o 

 appearance of such 



planetary matter, in 



