connected by a pipe with the rest of the apparatus. It consists of two
similar generators, D, made of copper lined with lead, and working
alternately, so as to avoid all stoppages in the manufacture when the
materials are being renewed. The pipe, d, connecting the two parts of
the apparatus forks so as to lead the gas from one or the other of the
generators, whence it passes into the copper washer within the base,
then into the glass indicating washer, and then to the pump which forces
it into the saturator.

Each of the generators communicates by special pipes, a, with a single
safety vessel, V, that operates the same as in the preceding apparatus.
The agitator, Q, is of bronze, and is curved as shown in Fig. 11.

The production of this type of apparatus is dependent upon the number of
siphons that can be filled by a siphon filler working without
interruption.--_Machines, Outils et Appareils._

* * * * *




DETECTION AND ESTIMATION OF FUSEL OIL.


Until quite recently we have had no accurate method for the
determination of fusel oil in alcohol or brandy. In 1837 Meurer
suggested a solution of one part of silver nitrate in nine parts of
water as a reagent for its detection, stating that when added to alcohol
containing fusel oil, a reddish brown color is produced, and in case