Du Mez—The Galenical Oleoresins. 
941 
tube downwards, the water from the space between the cylin¬ 
ders can be run off. 
- 1849 
Mohr, Redwood and Procter’s Pharmacy, p. 270. 
This consists of a conical vessel A with a water joint rim at 
the top into which the cover fits. A, tube D is ground to fit into 
the opening in the bottom, and over the end of this tube is 
placed a conical tube C, the lower end of which has several 
notches cut in it, so that the liquid can pass under when placed 
as shown in the drawing. The lower extremity of the vessel 
A is ground to fit into the mouth of the receiver B. 
The above apparatus was mentioned by Procter, in 1849, in 
his article on “the preparation of the oleoresinous ethereal ex¬ 
tracts. ’ ’ 
- 1849 
Mohr, Redwood and Procter’s Pharmacy , p. 272. 
A is an ordinary tin displacer, except that the rim c is soldered 
around the mouth, in such a manner as to form a water joint 
when the rim of the cover d is placed in it; a is a perforated 
diaphragm, e a tin tube open below and above. The latter is 
soldered to the lower diaphragm, through which it passes, while 
the upper diaphragm slips over it loosely. In using the dis- 
