DE. J. P. JOULE 05^ THE SUEFACE- CONDENSATION OF STEAM. 
155 
Taele I. — Plain Tubes (continued). 
Description. 
No. 
Head of water. 
Conductivity. 
! Copper steam-tube 4 feet long. 
31 
20-12' 
408-89' 
Thickness of water space 0’06 inch. 
27 
21-45 
342-5 
28 
23-29 
353-6 
; 
96 
25-0 
519-07 
95 
25-66 
^26-44 
196-48 
U 02-68 
1 
92 
27-66 
460-81 
j 
91 
30-25 
433-62 
1 
94 
32-0 
325-87 
i 
93 
32-5 , 
583-32 
1 
86 
48 
435-25"] 
; 
87 
48 
540-42 
j 
88 
48 
611-33 
89 
48 
581-02 
j 
34 
48 
;>.48 
522-1 
>511-41 
35 
48 
466-96 
I 
36 
48 
474-32 
37 
48 
491-56 
38 
48 . 
479 - 77 ^ 
Copper steam-tube 4 feet long. 
40 
- 0-1 ' 
84-55' 
Thickness of water space 0*025 inch. 
44 
0-5 
^•11 
53-1 
>131-58 
45 
9-92j 
I 
257-1 J 
39 
12-8 
255-6 ' 
43 
55 
18-33 
26-66 
>21-6 
289-44 
411-66 
>327-86 
54 
28-6 J 
354-74^ 
46 
28-581 
239-09^ 
53 
28-74 
305-89 
56 
34-66 
^32-95 
523-85 
> 335-07 
42 
35-61 
303-08 
41 
37-16 
303-43J 
65 
48 1 
228-481 
66 
48 
>.48 
412-24 
^350-42 
67 
48 
410-55 
63 
193-5 1 
444-27'! 
49 
206-3 
490-99 
47 
210-2 
198-52 
62 
211 V208-6 
381-96 
>422-18 
58 
211-3 
446-82 
50 
211-7 
498-64 
1 
64 
216 J 
494-051 
1 61 
223-5 'I 
561-39 ] 
! 57 
231-4 
334-13 
! 48 
232 
473 3 
1 59 
233 )>240-7 
589-21 ).486-49 
1 60 
235-9 
5o4*£6 
i 51 
237-2 
512-66 
j 52 
292-06J 
370-49J 
