Du Mez—The Galenical Oleoresins. 
947 
and if the receiving bottle be placed in a water bath and the water 
gently heated, the ether will evaporate from the percolate, the 
vapors rising in the tube and condensing in the upper part of 
the percolator. 
Lewin R. 1887 
Ein neuer Extractions Apparat, 
Arch, der Pharm., 215, p. 74. [Proc. A. Ph., 35, p. 12.] 
This apparatus is adapted for 1) continuous extraction with 
hot menstrua, 2) continuous extraction with cooled menstrua, 
3) recovery of the menstrua from the finished extract by direct 
distillation. 
It is composed of three easily separable principle parts: C, 
the tinned copper still, B, the copper percolator, which is pro¬ 
vided with three movable sieve bottoms for the reception of 
1) For continuous extraction with hot solvents, the vapors 
pass from the still C, in the tube 1, and enter through the tri- 
