944 Wisconsin Academy of Sciences, Arts, and Letters. 
less, the top aa is taken off and D put on in its place. It is 
also a condenser. The water flows in at a and off through b. 
The conical bottom K is so arranged that the condensed solvent 
the tubes ee. As soon as the menstruum drops through color- 
drops from off the receiver i and is carried off into a flask 
• through the outlet e. The space between vv and aa is filled 
with either hot or cold water. 
- 1873 
Utensilien zur Bereitung der aetherischen und weingeistig- 
aetherischen Extracte. 
Hager’s Commentar zur Pharmakopoea Geirmanica, 1, p. 622. 
A displacement tube D with a wide mouth at its upper end is 
closed with a cork through which runs a thistle tube T. The 
lower end is pushed through a cork which fits tightly in a re¬ 
ceiving bottle R. The small glass tube l is for the purpose 
of letting the air escape from the receiver R. 
