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