Excerpt from The Heart of the Antarctic, Vol. 2: Being the Story of the British Antarctic Expedition 1907-1909 Series of temperatures were taken at every 2 ft. In depth daily for a about a fortnight. Afterwards a series was taken once a month, as we had not time to read them oftener. In the diagram are shown the curves of temperature for six months, at one reading per month, compared with the curve of mean air temperature for the four weeks preceding each reading of the temperatures of the lake Ice. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.