Page:A Voyage of Discovery and Research in the Southern and Antarctic Regions Vol 1.djvu/421

1841

TIME BY CHRONOMETER.

Let go at		3h	22m	19s.
100	fathoms passed out at		22	57	occupied	38s	running out
200	–⁠–		23	45	–	48
300	–⁠–		24	54	–	69
400	–⁠–		26	10	–	76
500	–⁠–		27	31	–	81
600	–⁠–		28	55	–	84
700	–⁠–		30	27	–	92
800	–⁠–		32	7	–	100
900	–⁠–		33	48	–	101
1000	–⁠–		35	36	–	108
1100	–⁠–		37	31	–	115
1200	–⁠–		39	29	–	118
1300	–⁠–		41	31	–	122
1400	–⁠–		43	34	–	123
1500	–⁠–		45	40	–	126
Struck ground in 1540 at			46	48	–	68
1540 fathoms passed out in			24	29

The boat was kept moored to the bottom some time to ascertain if there was any current, but it was not perceptible. The line was then cut, not being sufficiently strong to draw the weight up again.

In the afternoon the temperature and specific gravity of the sea at various depths was tried. The temperature of the surface at the time being 43°; at 150 fathoms, 42°; at 300 fathoms, 41°; at 450 fathoms, 40°, and at 600 fathoms, 39.8°: the specific gravity being the same throughout the whole depth as at the surface, 1.0274, at 43°. A piece of sea-weed, the first we had seen since leaving the antarctic seas, was passed during the afternoon.