O7 
of hydrocarbons resulted in a fuel loss, and is largely attributable to the 
kind of firing. No. 9 was also a continuous sample, between Terre Haute 
and Indianapolis, and showed the least coal consumption per car mile of 
any. This must mean that more volatile matter escaped in No. 1 than 
No. 9. Carbon monoxide was not determined in sample No. 1, but No. 9 
was analyzed for it. 
: Samples Nos. 2, 38 and 4 furnish an interesting study on the evolution 
of the volatile-combustible matter. 
Samples Nos. 5, 6, 7 and 8 show more strikingly the rate of volatiliza- 
tion. While the percentage of carbon dioxide in samples Nos. 5, 6 and 7 
remains the same, it is to be noticed that the percentage of free oxygen 
decreases, which means increased volatilization. 
As a rule samples show less uniformity than shop tests on account of 
the jarring motion of the locomotive. 
It is intended to make other tests in conjunction with temperature 
determinations with a view of determining percentage losses. 
Bese ; 1} Interval During Which Sample 
No. | CQ2z | CO O Kind of Firing. Was Taken From Time 
Fire Was Built. 
1 Doll dh sere S60.) Mediums: tice. 2. a. Continuous. 
2 | 14.0 0.8 AOR | CRLOA Ya eran ot shots ois oc 20-30 seconds. 
3 | 13.7 0.5 AGW MEL CA VV; aii toretsiois eyets) obs 35-45 seconds. 
4] 12.6 0.0 OM eRe yavaeaes «ack. 50-60 seconds. 
EO: O! | esto. So) One shovel...c%. 3.5 « 2-3 seconds. 
Ol MOON oeecoe 8-4 Onershovells. ne. 3-4 seconds. 
MOI OLON i 52 oot | Oneishoviels:. ic... § 4-5 seconds. 
8 Dae areca art S77 |(One:shovel 2... 0.0: 5-6 seconds. 
9 eo (40) MOE |) ete eee on dnemooe Continuous. 
LO LEO 0.7 uA | lle aveyines .inedsrest ne Continuous. 
Medium fire, 2-3 scoops. 
Light fire, 1-2 scoops. 
Heavy fire, 4-5 scoops. 
7—Science. 
