102 



BEXJ. PIKE S, JR., DESCRIPTIVE CATALOGUE. 



T/ ie Tube and Flask Holder. 

 (Fig. 569.) This consists of 

 a metal rod supported on a ma- 

 hogany or metal stand ; on the 

 rod is a movable ring, having a 

 milled-head screw by which it 

 may be fastened at any height ; 

 on the side of the ring opposite 

 to the screw is a pair of spring 

 forceps, so formed as to receive 

 the necks of various sized flasks, tubes, &c., and by the draw- 

 ing of a slide on the forceps the flask or tube may be conve- 

 niently held. The cut represents a flask thus supported, 

 having a bent tube connected to the neck of the flask by a 

 cork through which the tube passes, the other end of the 

 tube being immersed in a jar of water; a spirit lamp is 

 placed under the flask. Price, $1.50. 



- 57 - Apparatus for Distil- 



lation and Condensation 

 of Liquids. (Fig. 570.) 

 This arrangement con- 

 sists of a glass retort 

 supported on a common 

 retort stand by one of 

 the rings ; a spirit lamp 

 beneath : a retort stand 

 supporting a tubulated 

 quilled receiver, the neck 

 of the retort entering the 

 tubular neck of the re- 

 ceiver, the quilled neck of the receiver being inserted into a 

 flask surrounded by a jar of cold water; another retort 

 stand supporting a funnel of water, which by drops falls on 

 folds of paper on the neck of the retort, and from thence 

 dropping into a bowl beneath. In the distillation of some 

 ether the annexed cut will assist the understanding of 

 several means of condensation. The ether passing from the 

 retort meets first with water trickling from a funnel and 

 falling upon folds of bibulous paper placed over the stem 

 of the retort. A little further down the neck, water drops 

 from a vessel at A on the neck, and from that to a vessel 

 beneath ; then passing into a tubulated receiver, it is partly 



