118 



GASIFORM OXIDE OF CARBON, 



isnoweafily gas, which formerly was to be procured only with difiiculty 



"^*^^* and in fmall quantity, may now be obtained eafily, rbadily, 



and without much expcnfe, wliich afiords the advantage of 



"■*'* fubjefling it to many more exptrimciits than has hitlierto been 



done. 

 Otherufcsofthe The apparatus in qnefiion may be of ufe hkewife for the 

 apparatus, . preparation of fulphurated hydrogen ga", carbonated hydrogen 

 gas, and phoiphorated hydrogen gas: it may iikewife be em- 

 ployed for faturating a gas with any fubftance whatever, par- 

 ticularly when a high temperature is requifile for this fatu- 

 ,. . .> ration. 



' '■ The better to make known the apparatus of Mr. Baruel, 

 I will give the defcription of it communicated to me by the 

 author, and add a (ketch of it, which will give a more com- 

 plete idea of all its-parts. Plate VIII. 

 Percriptlon of Suppofe it is required to make gaiitorm oxide of carbon : 

 the apparatus, fome charcoal is to be taken very dry and carefully chofen, 

 p?ocm^ng\afi- ^""^^^^ *"^^ ^'"^^^ pieces, and introduced into the three gun- 

 form oxide of barrels, B, C, D. The charcoal is to be preffed lightly toge- 

 carbon. * therwith an iron rod, .fo as to occupy only the part of each 



barrel that is to be heated, but it muft not be rammed hard. 

 The three gun-barrels' are then to be placed horizontally fide 

 by fide in a reverberatory furnace. A, leaving about two 

 inches ditlance between them ; fecured in their places with 

 moiftened brick earth, and covered with the dome of the 

 furnace. 



This done, fix in the mouth of the barrel B the glafs tube 

 E, which is curved fo as to admit its other extremity to be 

 inferted into the neck of the bottle F ; the neck of this bottle 

 being large enough to hold Iikewife the pipe of the curved 

 funnel G. Into the oppofite end of the barrel B one of the 

 ends of the curved tube H is to be introduced, the other end 

 of the tube being inferted into the opening of the barrel D, 

 fo as to form a communication between B and D. A fimilar 

 tube I is fitted to the other extremity of D and the adjacent 

 end of C, forming a communication between thefe two bar- 

 rels. Laftly, From the oppofite extremity of the barrel C 

 ifiues the tube K, which is bent at right angles, fo that its 

 fecond curvature pafles under the receiver Mj placed on the 

 ilielf of the pneumatic tub with water L. 



Every 



