490 SEVENTH REPORT—1837. 
llth Aug., 1837. WAVE LXXXI. Trapezoida) Channel (L). 
Generated by protrusion of solid parallelopipedon C. 
Times observed directly at Stations y and 4, single transits. 
Time, « Russell, Index, y Hamil, Index, 3 Donaldson. 
Statical level observed at ¥ & ae aed \ Corrected depth = 5:00 inches. 
A B C D Ej) A B Cc D E 
a ES eee 
feet. asec! sec.|y in.|d in.|9/in.|/in.| in. || feet. a sec.|B sec.|y in.|3 in.|y/in.|in.| in. 
Cee vaze 0:0} 2°0 | ... | 2°05) ... | 7:05] 55-7) ... | 17-5] ... |0°50} ... 10°50] 5-50) 
WAG cas 4:5] ... 10°80) ... |0°80) 5°80)) 75°7| ... | 25-0) 0-25) ... | 0°30) ... | 5°30 
35°7| ... | 110) 0°70) ... | 0°75) ... | 5°75)| 95-7 ere (Pei (ie est (eld begets A" 
llth Aug., 1837. WAVE LXXXII. Trapezoidal Channel (L). 
Generated by protrusion of solid parallelopipedon C. 
Times observed directly at Stations y and 9, single transits. 
Time, « Russell, Index, y Hamil, Index, 3 Donaldson. 
Statical level observed at { ov 7 ¢ o10} Corrected depth = 5:00 inches. 
A B C D E || A B Cc D E 
feet. | « sec. y sec.|y in|} in. yin. |¥ in, in. || feet. | @ sec.|6 sec.|y in.) ia. y'in.¥ in. in. 
O- | ... | 0°0/2-0 | ... | 2°05) ... | 7:05)| 55°7| ... |17°75) ... 106 | ... (0-6 | 5°60) 
14:6 4:5] ... | 0-9) ... | 0-9) 5°90)) 75°7| ... [24:5 10°35] .../ 0°40) ... | 5-40) 
35°7 11-0} 0°75) ... | 0°80) .. - | 5-80 95-7)... 31°25)... [025 wee |0°25) 5-25 
11th Aug., 1837. WAVE LXXXIII. Trapezcidal Channel (L). 
Generated by protrusion of solid parallelopipedon C. 
Times observed directly at Stations y and 3, single transits. 
Time, « Russell, Index, y Hamil, Index, > Donaldson. 
Statical level observed at {ee = a . lot Corrected depth = 5-00 inches. 
A B Cc D E A B Cc D E 
feet. | a sec.|6 sec.|y in.|3 in.|7/in.|d’in.| in. || feet. a sec.|— sec,|y in./3 in.|7/in,|d’in.| in. 
00) «... 0-0] 2-5] ...| 2:55) ... | 7°55]) 55:7] ... (16°75) ... |0°55) ... (0°55) 5°55 
LEG!" <.. 4-0) 0.5) OF8)) .c. |0°80/'5°80]] 75:7 | ©.. 124°O) ot coe aiawan Nee 
35:7| ... | 10:5) 0-7) ...| 0°75! ... |5°75]| 95:7] ... [305 | ... jo 
1lth Aug., 1837. WAVE LXXXIV. Trapezoidal Channel (L). 
Generated by protrusion of solid parallelopipedon C. 
Times observed directly at Stations y and 3, single transits. 
Time, « Russell, Index, y Hamil, Index, 3 Donaldson. 
Statical level observed at{ 3 . i o10f Corrected depth = 5:00 inches. 
A B e D | EA B Cc | E 
feet. | « sec.|@ sec.|y in.|3 in.|9/ in. ¥in.| in, || feet. | « sec./2 sec. y in. > in, y in. Yin. in. 
0-0) ... 0:0) 2-0 . | 2-05) . «| 7:05]| 55°7 |... | 175 0°55) ... (055, 5°55 
146i 4:0 0-80 
Ps . |0-80| 5-80) 75-7]... | 245 030! ... |0-35) .. se 
35°7| ... 10:5) 065)... 070. (5 70) 957) a. | ow ele we 
