156 
DE. J. P. JOITLE ON THE STJEEACE- CONDENSATION OE ST EAM . 
Table II. — Tubes furnished with Spirals. 
Description. 
No. 
Head of water. 
Conductivity. 
Copper steam-tube 4 feet long. 
Water space 0*325 inch. 
Spiral of 45 turns of wire 0*21 inch thick. 
100 
101 
102 
103 
1*95 
2*06 
1*43 . 
4*7 J 
2*53 
586*250 
478*15 
470*53 
532*07 J 
I Copper steara-tube 2 feet long, 
j Water space 0*125 inch. 
I Spiral of 50 turns of wire 0*105 inch thick. 
125 
126 
124 
115 
116 
117 
118 
119 
120 
121 
122 
123 
8 
24 
24 
24 
24 
24 
24 
176 
207 
193 
4*470 
5*8 V6*22 
522*6 
532*54 V528*91 
531*59 J 
727*52"l 
700*44 I 
•24 
192 
>686*44 
601*2 
768*58 
684*5 
636*38^ 
859*4 ] 
872*28 ^820*93 
731*1 J 
Copper steam-tube 4 feet long. 
Water space 0*125 inch. 
Spiral of 96 turns of wire 0*105 inch thick. 
130 
131 
132 
129 
128 
127 
48 
48 
48 
218 
248 
274 
48 
246*66 
388*560 
571*56 U99-96 
539*75 J 
892*520 
833*78 >813*33 
713*7 J 
Copper steam-tube 6 feet long. 
Water space 0*125 inch. 
Spiral of 143 turns of wire 0*105 inch thick. 
133 
22*1 
145 
72 
146 
72 
147 
72 
140 
250 
139 
261 
138 
279 
141 
301 
142 
301 
137 
315 
143 
327 
144 
337 
136 
341 
72 
>301*33 
262*27 
355*841 
420*87 >412*4 
460*48 j 
891*3 
918*05 
802*02 
846*46 
710*76 >770*85 
662*57 
710*74 
719*16 
676*6 
TTie averaged results of the preceding Tables are collected together as follows : — 
Description. 
Plain tube 
Tube with spiral 
Plain tube 
Tube with spiral 
Plain tube 
Tube with spiral 
Plain tube 
Tube with spiral 
Head of water. 
0*56"] 
0*69 > 1*44 
3*11 J 
2*53 
Conductivity. 
157*830 
176*92 >155*44 
131*58 J 
516*75 
12*08 
12*44 
I 
1 
48 
48 
48 
48 
48 
48 
48 
384 0 
246*66 >277* 
-240*7 
18 
200*88 J 
286*13 
528*91 
430*91 
511*4 
350*42 
686*440 
499*96 >532*93 
412*4 j 
486*49 
820*930 
813*33 >801*7 
770*85 J 
