: 
= 
. 
i 
Silliman and Wurtz on Flame Temperatures. 845 
: the percentage of each component gas 2M its calorific capa- 
, as aig in this table, and oo 
fo) e as examples of these modes ae computation we 
here ot in tabular forms, de results of some analyses of a 
number of gaseous mixtures, made by us during the winter of 
1868-9. [These analytical results, it may be remarked, pos- 
sess points of novelty and importance, both scientifie and prac- 
tical, which will bring them up again hereafter, in other connee- 
tions, They are here placed on record. 
Table ILI, gives the results of two analyses of gaseous mix- 
tures obtained by passing steam superheated to incandescence up- 
ward through a mass of anthracite coal heated to a high degree 
ina clay retort of a novel ct according to what is 
how known as the “‘ Gwynne-Harris,” or American n Hydrocarbon 
System. In this table the veneiie are calculated without 
carbonic acid and sulphuretted hydrogen, which, with traces of 
nitrogen and sometimes of oxygen, are found in the unpurified 
anthracite gas. 
TABLE IIL 
No. 1. No. 2. Mean. 
eateten oc ccscg ai dee 60°43 59°32 59°87 
Carbonic oxyd 35°44 37°14 36°29 
Mare pee 4°13 3°54 3°84 
100°00 100°00 100°00 
In aca IV, column 1 gives the results of the analysis of 
the street gas served out sie period by the New Haven Gas 
Light C Cay - made from Westmoreland coal enriched with 
ut six per cent of Albertite. Column 2, the mean of four 
Haven during the same time, 
Westmoreland coal (with 10 ae cons mt of Albert) stom about 
its volume of the Anthracite gas. mns 3 and 4 a 
ed from 1 and 2 by centesimal en & ance deduction 
of the Senin ingredients, being what we propose to 
hate as the non-illuminating substrata of illummating gases. 
* Prof. masterly discussion of the su ect presented in his Gas- 
ometry, ee Ga the pide obj % has used a train of reason- 
Our abi 
Sinise cy smear mg eet ee ae 
: this most effectually, so far as illuminating gases are concerned. 
