Varieties and gradational series in nature, 114, 115 Veliger, young stage of marine snail, drawing of, to compare with a wheel animalcule, 181 Vesuvius, 55-73 as it appeared in A.D. 70, 57 ascent of, during eruption, 66 eruption of 1872 witnessed, 68-70 history of eruptions, 61-64 Vitamines or accessory food factors, 233 Volcanoes and eruptions, 72, 73 Water, blue colour of, 74-85 Weldon, Prof., on variation in the shore-crab, 118 Wells, spouting and fountain, of rock-oil, 227 Whales, their size and its limit, 86 Wheel animalcule, parasitic, on the sea-worm Synapta, 172 animalcules, 157-172 book on, by Mr. Gosse and Dr. Hudson, 158 compared with the young stages of growth of marine snails, 171, 181 minute males of some, 166 pictures of, 159, 161, 162, 163, 169 some survive drying up of the water in which they live, 166, 167, 178, 179 Willendorf, female statuette from, 50 Winans, Mr. Walter, on the picture of the Three Deer, 19-22 Wolf, engraving of head of, 48 Women, carvings representing, 50, 51 Zebras, 103 PRINTED BY MORRISON AND GIBB LTD. EDINBURGH ┌───────────────────────────────────────────────────────────────────┐ │ Transcriber's Note: │ │ │ │ Minor typographical errors have been corrected without note. │ │ │ │ Ambiguous hyphens at the ends of lines were retained. │ │ │ │ Mid-paragraph illustrations have been moved between paragraphs │ │ and some illustrations have been moved closer to the text that │ │ references them. The List of Illustrations and Index paginations │ │ were changed accordingly. │ │ │ │ Footnotes were moved to the ends of chapters and numbered in one │ │ continuous sequence. │ │ │ │ Italicized words are surrounded by underline characters, _like │ │ this_. │ │ │ │ Use of a caret (^) indicates a superscript number. │ │ │ │ Other corrections: │ │ p. 72: Suffrière changed to Soufrière (Soufrière of St. Vincent │ │ in 1812). │ │ pp. 153, 242: Pocahontes changed to Pocahontas. │ └───────────────────────────────────────────────────────────────────┘