Fabricius 46 Family 34 apidæ 34 of the honey-bee 34 Feeder 160 figure of 160, 161 Feeding 159 amount to feed 159 use of 159 what to feed 160 honey 160 sugar 160 flour 163 Female Organs 64 Fertile Workers 77 Fertilization of Flowers by Bees 220 Figwort 238 figure of 238 Fitch's Report 47 Foot-power Saw 151 Foul Brood 259 cause 260 cure for 200 symptoms of 259 Foundation 203 figure of 203 history of 203 use of 203, 207 how cut 207 how fastened 209 how made 206 Frames 132 arrangement for surplus 147 block for making 134 figure of 135 cover for 136 figure of 133, 134 form of 132 Gallup 133 gauge for construction 135 figure of 135 inventor of 123 Langstroth 132 number of 132 section 148 small--see sections 144 space about 136 space between 136 Fruit trees 225