Vaccination, importance of revaccination, 163-164 Veal, unsatisfactoriness of, in hot countries, 54 Vegetables, 3, 56-57, 61 Ventilation-- Hats, of, 30 Persian Houses, in, 8-9 Tents, of, 85-86 Thatched roofs favouring, 15 Tropical houses, in, 6-8, 13, 68-69 Verandahs, roofing materials for, 17 Vermin, building materials harbouring, 15, 16 Voyage to the East, clothing for, 26 Water-- Aerated waters, _see that title_ Boiling of, for drinking purposes, need for, and for personal superintendance of, 44-45, 133, 135 Contaminated, consequences of drinking--need for personal supervision of supply, 35-37, 131, 132 Filtering, danger of, 44, 135 Hill diarrhœa due to mineral matter in, 149 Indian towns, supply to, 37-38 Sources of supply-- Rivers, 43 Springs, 43 Wells, _see that title_ Washing of clothes, 23-25 Wells-- Methods of becoming infected in India, 134 Purification of, methods of, 42, 43, 88, 134, 136-139 Reliability of, 40-41 Wet-nursing in the tropics, advisability of, 151-152 Women in hot climates, 71-72; suitable head-dress for, 171-178 Wood, _see_ Timber Woollen materials, washing of, 23 Working hours in the tropics, 65-66 Worms, internal, prevention of diseases caused by, 179 _et seq._ Wyvern, “Culinary Jottings from Madras,” _quoted_, 54-55; _cited_, 64 Yellow fever, 93, 95, 97, 102 PART I. CLIMATE AND HEALTH IN HOT COUNTRIES. CLIMATE AND HEALTH IN HOT COUNTRIES. _PART I._ CHAPTER I. On Housing and Domestic Architecture. In hot climates, as elsewhere, people are rarely in a position to exercise much choice in their selection of a habitation, as its site must usually depend on considerations of business, and in the majority of cases, the number of available dwellings is limited. Oftener still, it is a matter of “Hobson’s choice,” and one must needs occupy the house that has served one’s predecessors in the work in which one may happen to be engaged. On this account it will be superfluous to do more than generally indicate the general principles on which it is desirable, that houses designed to afford shelter in hot climates, should be placed and constructed.