The bee-master should endeavour to prevent his labourers from swarming more than once; his policy is rather to encourage the industrious gathering of honey by keeping a good supply of "supers" on the hives. Sometimes, however, he may err in putting on the supers too early or unduly late, and the bees will then swarm a second time, instead of making use of the store-rooms thus provided. In such a case, the clever apiarian, having spread the swarm on the ground, will select the queen, and cause the bees to go back to the hive from whence they came. This operation requires an amount of apiarian skill which, though it may easily be attained, is greater than is usually possessed. II. MODERN BEE HIVES. NUTT'S COLLATERAL HIVE. No. 1. The late Mr. Nutt, author of "Humanity to Honey Bees," may be regarded as a pioneer of modern apiarians; we therefore select his hive wherewith to begin a description of those we have confidence in recommending. Besides, an account of Mr. Nutt's hive will necessarily include references to the various principles which subsequent inventors have kept in view. [Illustration] Nutt's Collateral Hive consists of three boxes placed side by side (C. A. C), with an octagonal box B on the top which covers a bell-glass. Each of the three boxes is 9 inches high, 9 inches wide, and 11 inches from back to front; thin wooden partitions,--in which six or seven openings corresponding with each other are made--divide these compartments, so that free access from one box to the other is afforded to the bees; this communication is stopped when necessary by a zinc slide passing down between each box. The octagonal cover B is about 10 inches in diameter and 20 high, including the sloping octagonal roof, surmounted with an acorn as a finish. There are two large windows in each of the end boxes, and one smaller one in the centre box; across the latter is a thermometer scaled and marked, so as to be an easy guide to the bee-master, showing him by the rise in temperature the increased accommodation required. This thermometer is a fixture, the indicating part being protected by two pieces of glass, to prevent the bees from coming between it and the window, and thereby obstructing the view.