192 ’ REPORT—1857. 
Temperature of water in box increased from 64° to 92°. Increase in 9 hours 28° 
Loss by radiation 1° per hour, Qhoursat 1° perhour, . 1 s . ss 
Total increase 37° 
Total increase of temperature in 9 hours 37°, or 4°%1 per hour. 
Average number of revolutions 88°64. 
50 gallons of water. 
Tuirp SERIES OF EXPERIMENTS.—June 22, 1857. 
Result of third day (8 hours), heating water by churning. 
Time. Temp. of water Temp. 
Ag in ae of air. _ winhen wor i 
, egan with cold water, in consequence 0 
Fs, RR cehien ia ais in bottom of box rong 
10 30 ,, . 58 
LSD 't <5 ees 61 
12 30 P.M a 685 i‘ a 
10 30 a.m. Stopped 15 minutes in con- 
Fy POs? our cidivoon id Cdy eynk 66{ sequence of belt breaking. 
2 38055 POS ae a (| 
B30 5 POR POTS © ee oe ab pet. Gatipe-glass broker 
430 ,, Py Os CSG 
Biss oy Mh) MOP ares se 6S 
Temperature of water in box increased from 56° to 83°. Increase in 8 hours 27° 
Loss from radiation in 13 hours 13°, or 1° per hour. 8 hours at 1° per hour. 8° 
Total increase 35° 
Total increase of temperature in 8 hours 35°, or 4°-375 per hour. 
- Average revolutions per minute 88°64. 
.50 gallons of water at starting. 45 gallons of water at stopping. 
THIRD SERIES OF EXPERIMENTS.—June 24, 1857. 
Result of fourth day (11 hours), heating water by churning. 
Time. Temp. of water Temp. Time. Temp. of Temp. 
ieee in box. of air. eee water in box. of air. 
Si AGAM, shen 72. obs 1:80) Pim: _. ah 98 
TP a0” 53 res eA) 230 ,, 2 re 00 
8 30° ,, = emia (Oe 3 30) 3; 2 magus: LOL 
9 30 ,, Si pare fOr Stopped 20 minutes, broke belt. 
10 30 |, ee BOO 4 30pm. .. . 102 
ULE) ea eee Bee oe Re} 5.530. 5, + “aig. 108 2 ees 
12 SO. RiMe os. veh WOOL Gs aati A 
Temperature of water in box increased from 72° to 104°. Increasein 11 hours 32° 
Loss by radiation in 13 hrs. 2°, or °0153° per hour. 11 hours at ‘0153° per hour 1%6 
Total increase 33°°6 
Total increase of temperature in 11 hours 33°°6, or 3°°05 per hour. 
Average revolutions per minute 88°64. 
50 gallons of water. 
THIRD Series oF ExpeRIMENTS.—June 25, 1857. 
Result of fifth day (13 hours), heating water by churning. 
Time. Temp. of water Temp. 
in box, of air. 
Oo fe) 
6 30am. . « « . 102 . . 68 Box covered with hair-felt on previotis 
TEU ot Wane, we, sk On: night, to prevent radiation as much 
830, .+s . .« 107 as possible. 
* 
