The honey bee: a manual of instruction in apiculture
Chapter X.--Increase of colonies 95
Natural swarming 95 Clipping queens 97 Automatic hivers 98 Prevention of after-swarming 98 Artificial increase 99 Dividing 100 Driving or brushing 100 The nucleus system 101 Prevention of swarming 101 Dequeening 102 Requeening 102 Space near entrances 103 Langdon non-swarming device 104 Selection in breeding 105