218 RESEAKCIIES UPON THE CHEMICAL PEOPEETIES OF GASES. 



My experiments seem to prove the absence of ethylene, propylene, isobutylene 

 and trimethylene from the gas supplied to Allegheny. The same is true of gas 

 from the localities mentioned in the table from ^o. 1 to 17. Tests could not be made 

 at the wells in the case of gas from Kokomo, Ind., and Vancouver, British Columbia; 

 but samples brought to the laboratory gave similar results. 



The very low illuminating power of natural gas of Western Pennsylvania is a 

 further evidence of the absence of defines which, as is well known, are remarkable 

 for the brilliancy of the light which they produce. By the kindness of Mr. J. W. 

 Patterson, gas inspector of Allegheny county, I am able to give the following data 

 as to illuminating power. 



The gas supplied to Pittsbui'gh by the mains of the Philadelphia Company, 

 November 30, 1892, possessed an illuminating power equal to 10 84-100 caudles per 

 five cubic feet of gas burnt per hour (mean of ten determinations). 



On the same date the illuminating power of the natural gas supplied by the 

 People's N^atural Gas and Pipeage Company was 10 77-100 candles. 



Mr. Patterson's tests were made with a thirty-six-hole Argand burner, having a 

 chimney seven inches long. 



ACETTLEISTE AIS^D ALLTLENE. 



Palladium chloride solution is unchanged, as already stated. Cerium dioxide, 

 mercuric chloride, gold chloride, silver nitrate, ammoniacal cuprous chloride and 

 osmic acid are all unchanged. Hence, in the gas I have tested, it may be said that 

 no hydrocarbons of the acetylene series occurred. 



I have found no reference to acetylenes in any published analyses to which I 

 have had access. 



CAKBOlsriC OXIDE. 



Carbonic oxide is nearly always stated to occur in the published analyses of 

 natural gas. 



In my experiments, palladium chloride, gold chloride, silver nitrate in ammonia, 

 iridium chloride, rhodium chloride, osmic acid, all used in solution, were unchanged. 



Experinients have been made with Allegheny City natural gas in the following 

 way : Gas has been caused to bubble for five weeks through ammoniacal cuprous 

 chloride solution. This solution was then largely diluted with water and boiled. The 

 gases expelled were collected and tested by palladium chloride solution ; but no car- 

 bon monoxide was found. It is true that, since the absorption of carbon monoxide 

 in cuprous chloride has been shown to be a case of mechanical solution rather than 

 chemical union, and that the absorbed CO can be expelled by a stream of other gases. 



