104 



BENJ. PIKE S, JR., DESCRIPTIVE CATALOGUE. 



consists of a series of glass three-necked bottles, connected 

 together by bent glass tubes ; the arrangement is shown in the 

 figure. The gas issues from the retort, the neck of which 

 enters the tubulated receiver, and from thence passes into 

 the water in the first bottle and is absorbed ; when the 

 water in this vessel is saturated, the gas passes to the next 

 vessel by the glass tube which dips beneath the water ; this 

 being saturated, the superabundant gas passes to a third 

 vessel, and so on to any extent that may be required. 



Price, Woolf 's half-pint bottles, - - $0.75. 



" pint " - $1.00. 



" quart " - each, $1.25. 



" bent tubes for Woolf's bottles, each, $0.25. 



" safety " " " " " $0.75. 



" the whole arranged in a tray, 1 pint, $6.00. 



" : " pint, $0.50. 



quart, $7.50. 



Fig. 57* tfootk's Apparatus. (Fig. 573.) 



There are various kinds of apparatus for 

 impregnating water with carbonic acid. 

 One of the most elegant and simple is 

 Dr. Nooth's, represented in the cut. 



The upper vessel, E, is shaped like 

 a funnel contracted at the top, and 

 covered by a stopper, which, however, 

 does not fit tight ; the middle vessel, 

 D, fits into the lower one, A, and a 

 communication is made from one to 

 the other by a tube, c, between them, 

 which tube is perforated by holes so 

 small, that gas will ascend through 



them, but water will not descend. 



The lower vessel, A, contains chalk 



and water. To use the apparatus, fill B with water, then 

 partly fill E also with water, and put them in their appointed 

 places upon each other ; then pour sulphuric acid into the 

 orifice, B, carbonic acid gas will rise, pass through c, and be 

 absorbed by the water in D. When more gas arises than 

 can be absorbed, its pressure above the surface of the water 

 in D will drive a portion of that water up into the funnel at 

 top, E, and thus the safety of the apparatus is insured. 



