on a large scale, the conversion of iron into steel, and numberless
other processes familiar to the specialists whose walk is in the
byways of applied chemistry, should all profit by the employment of
this energetic agent. Doubtless, too, the investigation into methods
of producing the compounds of nitrogen so indispensable as plant
foods, and for which we are now dependent on the supplies of the
mineral world, may be stimulated by the fact that there is available
by Brin's process a cheap and inexhaustible supply of pure
nitrogen.--_Industries._

* * * * *




FRENCH DISINFECTING APPARATUS.


[Illustration: IMPROVED DISINFECTING APPARATUS.]

We represent herewith a sanitary train that was very successfully used
during the prevalence of an epidemic of _sudor Anglicus_ in Poitou
this year. It consisted of a movable stove and a boiler. In reality,
to save time, such agricultural locomotives as could be found were
utilized; but hereafter, apparatus like those shown in the engraving,
and which are specially constructed to accompany the stoves, will be
employed. We shall quote from a communication made by Prof. Brouardel
to the Academy of Medicine on this subject, at its session of
September 13: