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State of the Physical Sciences. 307 
foe seg ing. Of a sudden, the atomic seory be has gained a new 
ew drama 18 
the mnolbatd In all the hal ee sciences, Lopate astronomy, 
the war r has been carried home to the molecules: the intelleec- 
foundation of theory and experiment of the so-called conservation 
of energy, the _ of the correlation of physical forces, is one of 
the first fruits of molecular mechanics. 
It is no Qiapuredongan of this discovery, on which was con- 
centrated the power of severa minds, to call it an sitenntin; 
tho : 
in astronomy, wher ae resistance and collision do not inter- 
fe re. _ The Sonssevintions nergy, in its extended signification, 
Lagrange accepts them all as results of the known laws of me- 
chanics and no ot as the essence of the laws of nature. The most 
that phy sical science can sage is that it possesses no evidence of 
roved. : 
be prove is the life of hich = : hess have abandoned it. Its. 
impo ortance is s lost i in that of the molecular — And what ~ 
