LIST OF ILLUSTRATIONS. XIX 



FIG. 



60. Transverse section of Slate Filter, . . . . .114 



61. Old Wood Filter, . . . . 115 



62. Transverse section of ditto, . . . 115 



63. Longitudinal section of ditto, ... 116 



64. Plan of Middlethird Hatching-house in 1874-75, . . . 118 



N 



HATCHING-BOXES. 



65. Original Howietoun Hatching-box, . . . . .124 



66. Transverse section of ditto, . .... 125 



67. Longitudinal section of ditto, ..... 125 



68. Portion of longitudinal section of a Glass Grille, showing the per- 



forated zinc, . . . . . . .127 



69. Portion of a Glass Grille, ...... 127 



70. Transverse section of a Glass Grille, showing the mode of attachment, 128 



71. Inlet-screen for Hatching-box. First form (now obsolete) shown in 



section, . . . . . . . .128 



72. Front of ditto, . . .128 



73. Plan of ditto, . . ... 128 



74. Section of a Hatching-box, showing second form of Inlet-screen in 



position (also obsolete), ...... 128 



75. Longitudinal section of ditto, . . . . .128 



76. Breakwater as at present used instead of an Inlet-screen, . . 129 



77. Longitudinal Section of Hatching-box, showing Breakwater and 



Safety -screen in position, ... .129 



MIDDLETHIRD HATCHING-HOUSE. 



78. Longitudinal Section of a Portion of the House showing E-spout, . 130 



79. Transverse Section of the E-spout, ..... 130 



80. Plan of the E-spout, showing its connection with the Aqueduct and 



Distributing-spout, . . . . . .130 



81. Elevation of Stand with Eearing-boxes, showing the Distributing- 



spout and connections in section, . . . .131 



82. Cross-section of Distributing-spout, showing one of the Distributors 



in elevation, ....... 131 



83. Cross-section of Distributing-spout, showing one of the Distributors 



in section, ....... 131 



84. Plan of the Distributing-spout, showing connections, . 132 



85. Transverse Section of a Rearing-box and Lid, . . .132 



86. The Lid of a Rearing-box, ... .132 



87. Longitudinal Section of a Rearing-Box and Lid, . . .133 



