LIST OF FIGURES
FIG. PAGE
1. Map of New York State [5]
2. Bad conditions about a dwelling [28]
3. Grading that turns water away from the house [42]
4. Modes of laying out drains [46]
5. Exterior wall-drains [50]
6. Interior cellar-drains [51]
7. Wall modes of making air-space [53]
8. Water-tight wall [54]
9. Rough-backed wall [56]
10. Even-backed wall [56]
11. Modes of making water-proof cellar walls [57]
12. Water-proofing of cellar walls [58]
13. Cellar-wall forms [65]
14. Letting in fresh air [78]
15. Ventilating device [79]
16. Ventilating device [80]
17. Ventilation by means of coal stove [82]
18. Coal-stove ventilation [83]
19. Coal-stove ventilation [84]
20. Outlets into walls [86]
21. Cow-barn ventilation [88]
22. How a pump works [105]
23. Air-lift pump [106]
24. Diagram of a spring [109]
25. Water finding its way from a hillside [110]
26. The sinking of wells [110]
27. Mode of sinking a well [114]
28. A well that will catch surface water [115]
29. A well properly protected [116]
30. A properly protected well [117]
31. Well-drilling apparatus [118]
32. Sinking a well by means of a water-jet [120]
33. An enclosed spring [122]
34. A spring extension [123]
35. A reservoir for home use [126]
36. Stream draining a privy [129]
37. Contamination of a creamery from the water supply [148]
38. A protected spring-chamber [157]
39. Concrete core in a dam [159]
40. Section of a flood dam [161]
41. Section of a flood dam [162]
42. A joint in tile pipe [167]
43. Windmill and water tank [170]
44. Installation of a ram [172]
45. Means of securing fall for hydraulic ram [174]
46. A hot-air engine [176]
47. A gas engine [179]
48. Pump operated by belt [180]
49. Duplex pump operated directly by steam [180]
50. Raising water by means of compressed air [182]
51. Wooden tank [183]
52. Iron tank [185]
53. Hand pump applied to air-tank [186]
54. Engine applied to air-tank [187]
55. Windmill connection with tank [188]
56. Construction of a wooden tank [193]
57. Hot-water attachment to the kitchen stove [195]
58. Enameled iron sink [197]
59. Enameled iron laundry tubs [198]
60. Leveling the drain [200]
61. Water-supply installation [202]
62. A trap [204]
63. Washout water-closet [205]
64. Washdown water-closet [205]
65. Syphonic closet [205]
66. Syphon-jet closet [206]
67. Sewage beds [217]
68. Plan of sewage beds [220]
69. Plan of subsurface irrigation field [224]
70. Section of "Miller" syphon [226]
71. Plan and section of a septic tank [227]
72. Section of a septic tank with syphon chamber [229]
73. Plan of sewage disposal for a single house [231]
74. School girl with adenoids [289]
75. Outdoor sleeping porch for tuberculous patients [343]
76. Mortality from pulmonary tuberculosis [344]
77. Spring infected by polluted ditch [356]