In Unicomb hives stocked with a natural swarm (as is generally the plan), there is considerable difficulty in keeping the bees alive through the winter. In a hive where the combs are removeable, no loss of bees need be occasioned. We do not recommend the hive we are now describing as a winter residence for bees. For four months in the year, when bees are most active and when their operations are most interesting, this hive may be brought into use, either of the two plans before described being adopted. An artificial swarm should be put in during May or June, and taken out, in the method before mentioned, and then placed in the square box during the month of September; sometimes it may do for a stock to be put in a month or so earlier, but should never be retained later in this hive. In October we often have cold nights; the bees and brood being in such close contact with the glass, and not able to cluster as is their natural wont, suffer from exposure to the variations of temperature. In some degree to moderate this. Me have used treble glass with a space between each square; greater warmth is thus attained, and the view is not intercepted. Opportunity should be taken for cleaning the Unicomb hive when empty, so as to be ready for re-stocking as a new hive in the following summer. The "Unicomb Observatory" hive is one which might have been suggested by the lines of Evans:-- By this blest art our ravished eyes behold The singing masons build their roofs of gold. And mingling multitudes perplex the view, Yet all in order apt their tasks pursue; Still happier they whose favoured ken hath seen Pace slow and silent round, the state's fair queen. HUBER'S HIVE. No. 19. To Francis Huber--not improperly styled the "Prince of Apiarians,"--we are indebted for more extensive and accurate observations on the habits of the Bee than has been contributed by all other observers since the time of Aristotle.