Titicaca, Lake, 101 Toronto Stage, 91 _Trapa_, 129 Trasimeno, Lake, 154 Tree-rings and rainfall, 143 Turbarian, 140 Triassic, 37 TYNDALL, 19 U. Uinta Mountains, 94 _Unio_ in Niagara, 132 Ural Mountains, 57 V. Venezuela, 100 Verkhoiansk Mountains, 79 Victoria Nyanza, 104 Vikings, 164 Volcanic dust, 16, 20 VOLLOSSOVITSCH, 79 W. Wales, 57, 64 Warren, Lake, 123 Wasatch Mountains, 93, 94 WAYLAND, 104 WEGENER, 20, 34 WERNERT, 53 White Sea, 130 Wine harvest, 155 Winters, severe, 155 Wisconsin Glaciation, 91, 92 WOLF, 145 Wurm Glaciation, 48 Y. Yarmouth Stage, 88 _Yoldia_ Sea, 50, 124 Yucatan, 151 Yukon, 124 _Printed in Great Britain by Jarrold & Sons, Ltd., Norwich._ FOOTNOTES: [1] By this term we shall in future understand only that part of it which is responsible for thermal effects. [2] If the figure of the earth is adjusted to its speed of rotation before the development of ice-sheets, the latter renders it too prolate, and there will be a tendency for readjustment by the transference of mass towards the equator. [3] This has been the subject of much discussion recently. For a summary see _Science Progress_, 17, 1922, October, p. 233. [4] Leverett, F. (see Bibliography). [5] See reference to Antevs in this connexion. [6] “The pulse of Asia,” p. 356. See also a new work by E. Huntington, entitled: “Climatic changes.” [7] “Climatic variations in historic and prehistoric time.” [8] “Sur le prétendu changement du climat européen en temps historique.” [9] Or lemur-like ancestor. There is evidence to show that man’s ancestor was a nocturnal animal, whose food supply was governed by the phases of the moon. [10] “Scientific monthly,” New York, 4, 1917, pp. 16-26. [11] “Science progress,” 15, 1920, p. 74. [12] “Climate and evolution.” [13] “Civilization and climate.” TRANSCRIBER’S NOTE Obvious typographical errors and punctuation errors have been corrected after careful comparison with other occurrences within the text and consultation of external sources. Some hyphens in words have been silently removed, some added, when a predominant preference was found in the original book. Except for those changes noted below, all misspellings in the text, and inconsistent or archaic usage, have been retained. Pg 64: ‘powerful conviction’ replaced by ‘powerful convection. Pg 97: ‘and Tierra del Fuega’ replaced by ‘and Tierra del Fuego’. Pg 103: ‘Drakenberge Mountains’ replaced by ‘Drakensberg Mountains’. Pg 150: ‘modern Pueblas who’ replaced by ‘modern Pueblos who’. Pg 166: ‘coffiecients are’ replaced by ‘coefficients are’.