APPARATUS FOR THE ANALYSIS OF GASSES. 83 



This- new species may be denominated delphinus melas, Name and cha- 

 on the sunie principle on which Gmelin gives the Beluga racter> 

 the name of del ph. leucas. The following may serve as 

 its character. Delphinus Melas. — Corpore crasso, nigro; 

 pinna dorsali una brevi; pinnis pectoralibus longis, angustis; 

 rostro obtuso ; maxitlo superiore proclinante ; dentibus acutis 

 conoideis, parum incurvatis. 



THOMAS STEWART TRAILL. 

 Liverpool, Dec. 17, 1808. 



II. 



Description of an Apparatus for the Analysis of the Com- 

 pound Inflammable Gasses by slow Combustion ; with Ex- 

 periments on the Gas from Coal, explaining its Applica- 

 tion. By William Henry, M.D., Vice P res. of the 

 Lit. and Phil. Society, and Physician to the Infirmary, 

 at Manchester. Communicated by H. Davy, Esq., Sec. 

 U.S.* 



JL HE aeriform compounds of hidrogen and carbon, which Compound in- 

 were already entitled to accurate investigation, as objects of flammable gas- 

 scientific research, have derived an additional claim to the !!!? ™*I U * ccu " 



raie exi mina~ 



attention of the chemist from their application to an im- tion, 

 portant economical purpose, described in a late communi- 

 cation to the Royal Society f. Yet there is, perhaps, no 

 part of chemistry, the investigation of which is beset with but this liable 

 greater difficulty, or with more numerous sources of errour ; to man y er * 

 insomuch, that the actual state of the science enables us to 

 attain scarcely more than approximations to the truth, and 

 degrees of probability of greater or less amount. It was 

 the object of the experiments, which are described in the here attempted 

 following pages, rather to remove some of the obstacles, toberemoyed 

 which present themselves to a successful inquiry into the 



* Phil. Trans, for 1808, p. 282. 



f See Mr. Murdoch's paper, p. 124 5 or Journal, vol, XXI, p. 94. 



G 2 nature 



