Page:South - the story of Shackleton's last expedition, 1914-1917.djvu/470

350 almost entirely to their own particular spheres. The meteorological investigations took on a more definite shape; the instruments intended for the land base were set up on board ship, including self-recording barographs, thermometers, and a Dines anemometer, with which very satisfactory results were got. The physicist set up his quadrant electrometer after a good deal of trouble, but throughout the winter had to struggle constantly with rime forming on the parts of his apparatus exposed to the outer air. Good runs were being thus continually spoilt. The determination of the magnetic constants also took up a good part of his time.

Besides collecting plankton the biologist was now able to put down one or other of his dredges at more frequent intervals, always taking care, however, not to exhaust his store of preserving material, which was limited. The taking of water samples was established on a better system, so that the series should be about equally spaced out over the ship's course. The geologist suppressed all thought of rocks, though occasionally they were met with in bottom samples; his work became almost entirely oceanographical, and included a study of the sea-ice, of the physiography of the sea floor as shown by daily soundings, and of the bottom deposits; besides this he helped the biologist in the temperature and salinity observations.

The work undertaken and accomplished by each member was as wide as possible; but it was only in keeping with the spirit of the times that more attention should be paid to work from which practical and economic results were likely to accrue. The meteorologist had always in view the effect of Antarctic climate on the other southern continents, the geologist looked on ice from a seaman's point of view, and the biologist not unwillingly put whales in the forefront of his programme. The accounts which follow on these very practical points show how closely scientific work in the Antarctica is in touch with, and helps on the economic development of, the inhabited lands to the north.

During the voyage of the 'Endurance' it was soon noticed that the terms being used to describe different forms of ice were not always in agreement with those given in Markham's and Mill's glossary in "The Antarctic Manual," 1901. It was the custom, of course, to