148 
Diameter of piston rods: Inches. 
HF CH PLESSUTe )Ae.. 1 28s wi siats She hate apne Soyo! alapexe eee Me peta ate 6 
Intermediatey < St26u sat Re eit be os. deltas seers 7 
HOW DLESSIre "mee | Pe Re ee oS occa el ea nek ceaeae 8 
Diameter of pump plunger (three single acting)........... 33 
Sizoke. of fall opistonsyand splungers. 2 cise sods oss ee oe 60 
The more important conditions prevailing during the test of July 5 
were substantially those of every-day service, and were as follows: 
HevoliHons? PermInGLe ye ~ 50. oss as eine bee aes OS eer. ce oe 21.5 
SLCATHY DPESSUER *h cee er bie te cine ae epee te eneee te ale wate 155.6 
Total pressure against which pumps were operated (water 
pressure against which pumps delivered, plus suction 
LET) OO UNO Rates cases Acts, ates eta oP ee oc Pee ee ee $3.7 
PNCICATERH HOPS WIO WEL. scree wists sic a ows ois aie oe Come ota 115.5 
Under these general conditions it was found that the engine performed 
11,725,000,000 foot-pounds of work at the pump, on a consumption of 79,- 
093,000 British thermal units, giving a duty per million B. T. U. of 150.1 
million foot-pounds, a performance which, as already noted, exceeds by a 
liberal margin that obtained in any test, the results of which have thus 
far been published. A comparison of the performance of this engine with 
that of two other famous engines is as follows: 
Name of designer or builder......... E. P. Allis Co. ....E.D. Leavitt, Jr. Snow Steam Pump 
Works. 
locality. <i. sis esis noveds as ops ol Waukee, Wis: ‘Obesinut Gall: 
MAAR LY <tc eee Indianapolis, Ind. 
NEA Ce SE 8 Se SOE RET Fete Bel Triple expansion.Triple expansion.Triple expansion. 
Name of expert conducting test......Prof. R. C. Car- 
PeNnter w..i-. .>.> Prof. E. F. Miller. Prof. W.F.M.Goss. 
Capacity—million gals. in 24 hours..18.................. Sascha sone eee 20. 
indicated horke: power, L/P s.8, 22.010 Oo ae nes See 1D Lav cwomelcs een Dees 
Duty based on 1,000,000 heat units, 
expressed in million foot-pounds. .137................. LEN RL BES eee BA Sea es (be le 
The work incident to the test was advanced by careful, painstaking 
and conservative methods, and it was believed at the time that the results 
obtained were as worthy of confidence as those ordinarily derived from 
such work. In view, however, of the remarkable performance obtained, 
and to avoid any possible questioning concerning the performance of the 
