382 Scientific Intelligence. 
and diminished slowly when sand was mixed with the filings. 
rubbing it, we obtain, after a few days, a subchloride continuous 
in appearance, capable of being filed and polished like pure 1ron, 
but hardly magnetiza ; 
Iron reduced by hydrogen, and scales of oxide of iron, bee 
like iron filings; but magnetic and diamagnetic substances mixe 
with the filings alter notably the faculty they possess of being 
et 
magn . e study of all these circumstances promises any 
d 
owders 
increase to a maximum, and afterward diminish when the approx” 
imation of the fragments has restored a sufficient degree of 
tinuity to the mass. —Comptes Rendus, \xxxi, 205; pesou rage 
255. E. © P. 
14. Sounding Flames.—M. C. Decuarme finds that persistent 
and varied sounds may be obtained by allowing a current of alr 
to impinge on a jet of common illuminating peel on from ® 
tube 3 to 5 mms. in diameter, and forming a e 30 to 50 cms. 
