Chemistry and Physics. 309 
the phraseology of our mechanics we define matter and force 
as if they had an independent existence. But we have no con- 
ception of inert matter or of disembodied force. ot we know shud 
matter is its pressure and its motion. The old atom had o 
partly potenti: pt partly kinetic. If it could be aes n that all 
the phenomena displayed in the physie val vate were simply trans- 
mutations of the original energy existing in the molecules, phys- 
ical science would he satisfied. Where physical science ends, 
sabtiral arama A which is not wholly a aeapee ies our vocab- 
ulary, begins. Natur bs philosophy can give no ut of energy 
when disconnected v ith an ever present ‘aialliceane and Will. 
In Herschel’s bonstet dialogue on nigh ms, after one of the speak- 
ers had explai all the wonderful exhibition of nature as the 
work of natural forces, Hermione replies: “ Wonderful, indeed ! 
Anyhow, they must have not only good memories but astonishing 
presence of mind, to be always ready to act, and always to act, 
without mistake, according to the i y laws of their being, in 
every complication that occurs.’ nd elsewhere, “ Action, with- 
out will or effort, is to us, peer eee 9 as we are, unrealizable, 
unknowable, inconceivable. *» ‘The monads of Leibnitz and t e de- 
mons of Maxwell e express in words the personality implied in every 
manifestation of force, 
SCIENTIFIC INTELLIGENCE. 
L CHEMISTRY AND PHYSICS. 
1. woxy bori: . 
the sop gieee 4 8 Professor carte the sch discovered by Cay 
num retort a mixture of calcium fluoride and boric oxide with sul- 
submitting it to fractional distillation, however, in a platinum 
retort, nothing but boron fluoride was evolv ed at 140° and below, 
and between 160° and 170°, there came over a ing liquid, thick 
is poin 
