It is advisable in winter to furnish the glass stock hive with more protection from cold than is afforded by the straw cover alone; some thick baize, or wrapper of wadding, for which there is space between the glass hive and the cover, will prevent so much moisture condensing on the sides of the glass. As remarked under "Winter Precautions" (Chap. V. § xx.), it is only by the very greatest care that bees can be brought through that season in a glass hive. The hole at top is used for supplying food, should the apiarian fear the stock of honey is in danger of running short; either feeder may be used for the purpose (Chap. IV. § XX.). § VII. NUTT'S COLLATERAL HIVE. The late Mr. Nutt, author of "Humanity to Honey Bees," may be regarded as a pioneer of modern apiarians; and though his hive is now comparatively little used it is still worthy of description from the part it has played in the history of bee-keeping. [Illustration] It 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 nine inches high, the same wide, and eleven 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. The octagonal cover b is about ten inches in diameter and twenty 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 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.