172 W. P. Trowbridge on Deep Sea Soundings. 
I.— Table showing the rates of descent and resistances in pounds upon the 
sinker and line in sounding with one and two 32-pound shot, attached 
to a line ‘07 of an inch in diameter. 
One 32-pound Shot. i Two 32-pound Shot. 
Depth No. {Intervals of Resist. ) Resist. || No. {Intervals of] _ Resist. | Resist. 
Pathe — Times of |Velocity.| to to of | Times Hg Velocity.| to | to 
aths:/Casts.| Di ne Sinker.| Line. |/Casts.| Descent Sinker.| Line. 
eae Min. Sec. | Feet. {Pounds,' Pounds,’ “Min. | S Bee. Feet. |Pounds,| Pounds. 
0 1641 | 27°36 54°72 
50 883 8:15 | 19°15 12°50 32°70 22°02 
100; 1 08 0 48 : 
150; 6°66 | 4°64 | 22°72 940 | 18°49 | 86°23 
200) 1 30 1 04 
250 5-41 3°06 | 24°30 732 11121 | 4361 
800} 29 1 51 at 1 22 
350} 4°65 2°26 | 25°10 6°45 8-70 | 46°02 
400} 29 2 09 28 1 33 
450) 4:14 | 1:81 | 25°55 561 | 658 | 4814 
500} 29 2 25 . 28 } 44 
550 S17 1°50 | 25°86 536 | 601 | 4871 
600) 29 2 -89 ‘ 28 1 52 
650 3°55 1:33 | 26-03 4°81 4:98 | 49°74 
| moo] 27] 2 40 | 92} 2 08 
150 i 3°37 1:20 | 26°16 476 | 4°85 | 49°87 
800) 26 2 58 18 2 06 
850). 311 1:02 | 26°34 448 | 4°30} 6042 
900: 27 | 8 18 16| 2 14 
950) 2°94 91 | 26°45 4°23 3°83 | 50°89 
1000} 26 3 24 16 3-29 : 
1051 2°84 85 | 26°51 403. 8:48 | 5124 
41100) 22 3 81 16 2 29 
1150) 2°66 “15 | 26°65 385 3:17 | 5155 
1200): 21 8 45 14 2 36 
1250 2°66 “15 | 26°65 “S13 2-98 | 51°74 
1300} 19 3 45 ll 2 41 : | 
$1350 2°53 *68 | 26°68 345 | 2:55 6217 
41400) 18 3 57 il 2 54 ; 
11450) 243 62 | 26°74 ; 844 | 253) 6219 
41500) 19 4 07 1l 2 56 
1550) 237 59 | 26°77 3°26 | 228 | 52°44 
1600) 4 3 
16. 
4 2 3 
4 3 
| 438 3 
4 3 
4 4 3 
“& 4 $ 2 
4 8 8 
: “*: 
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