232 



BENJ. PIKE'S, JR., DESCRIPTIVE CATALOGUE. 



stopped with the hand or otherwise, and by suction at the 

 end of the additional tube, the liquor may be made to pass 

 over the bend, and fill the longer leg, when, being suffered 

 to escape, it continues to flow as long as the extremity is 

 immersed in it. Price, in glass, $0.75 and $1.00. 



" in metal, $0.75 and $1.25. 



" without suction tube, $0.37. 



Fig. 249. 



B 



The Wirtemberg Siphon. This in- 

 strument (Fig. 249), when once filled 

 with liquid, will remain so, and hence 

 may be hung up in that state ready 

 for use. One leg being plunged into 

 a vessel of the liquid to be drawn off, 

 it will escape through the open extre- 

 mity of the other leg, in consequence 

 of the additional pressure of the liquid 

 in the vessel. Siphons can only be 

 used for transferring liquids from 

 higher to lower levels. 



Price, 38 cts. and 75 cts. 



Fig. 250. 



Tantalus Cup. Fig. 250 consists of a cup 

 with a siphon so adapted to the cup, that the 

 short leg being in the cup, the long leg may 

 go down through the bottom of it. When a 

 liquid is poured into the cup, it will rise in 

 the cup until the height of it is above that 

 of the bend of the siphon, when the siphon 

 will begin to act, and the whole of the water 

 run out. It is called Tantalus Cup, because 

 the siphon is usually concealed by a small 

 figure endeavoring to drink, but who is foiled, 

 for immediately the water reaches his mouth it flows away. 



Price, $2.50. 



Fig. 251. 



Double-bodied Vessel (Fig. 251.) This 

 cut represents a piece of apparatus called a 

 double-bodied vessel, the only communica- 

 tion between the upper and lower portions 

 of which is through the tubes C and D ; if 

 the part B be filled with water to the neck, 

 and A with port wine, so as to rise above 



