. Discovery reports. Discovery (Ship); Scientific expeditions. 142 DISCOVERY REPORTS ? EDO 300 400 and reached 17-^0° C, a eradient compar- aiiva ^ii^,<^ i / -jy â ^.,cig a^xy. i^ ^ STATION NUMBER5-WSGI2 ableto the rise off Caldera (Fig. 29). There miles from coast_ ' was Httle further rise, the temperature touching 18-04° C. in the course of work on St. WS 629 at 46 miles offshore. Wind blew from the east and south with force 4 which increased to 5 from south-south- west in the open sea. During this time the ship's track from Sts. WS 622 to 630 deviated 11 miles to the northward, an
. Discovery reports. Discovery (Ship); Scientific expeditions. 142 DISCOVERY REPORTS ? EDO 300 400 and reached 17-^0° C, a eradient compar- aiiva ^ii^,<^ i / -jy â ^.,cig a^xy. i^ ^ STATION NUMBER5-WSGI2 ableto the rise off Caldera (Fig. 29). There miles from coast_ ' was Httle further rise, the temperature touching 18-04° C. in the course of work on St. WS 629 at 46 miles offshore. Wind blew from the east and south with force 4 which increased to 5 from south-south- west in the open sea. During this time the ship's track from Sts. WS 622 to 630 deviated 11 miles to the northward, and in addition the drift had an appreciable westerly component (Fig. 28). The return journey commenced with a moderation from force 5 to 2 in the southerly wind which later changed di- rection to the north; but before any change in the direction of the wind was noticeable, the water temperature at this distance from shore had altered and the surface isotherms had closed with the coast. Whereas on the outward run the temperature rose sharply between 10 and 21 miles offshore and from 31 to 46 miles had undergone no change, on the return journey the temperature fell from 17-9° C. and followed an even curve, dropping at first slowly and then rapidly until it reached 14-9" C. at 2 miles from shore (Fig. 29). Thus the temperature was generally warmer; the isotherms of 17, 16 and 15° C. had all moved towards the shore, while water of 14° C. had dis- appeared. At the same time the ship was carried in a north-easterly direction, as may be inferred from the positions at the beginning and end of St. WS 630, during which the ship was drifting for 12 hours (Fig. 9)- The question whether temperature changes on this line can be correlated with change of wind or with some cause due to the new locality into which the ship had drifted, may now be considered. In the first place it is to be noted that positions of isotherms had been WS6B WS6I5WS6I3 WSGB W5620 W5BI7 WS6I6 fGM. 303
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