When the hive was being examined on one side, the entrance was closed by a piece of wood inserted in it, and when the other side was brought round to be inspected, the piece of wood withdrawn and placed in the opposite entrance. This was a most ingenious contrivance; but it did not answer our purpose for indoors. When Mr. Woodbury sent us his hive, we were preparing for the International Exhibition of 1862, and in placing it against the sides of the building, we followed our old plan for ingress by having the entrance at the end. Since that time we have made a considerable improvement by adapting Mr. Woodbury's cleverly contrived turn-table to suit our own hive. Like Mr. Woodbury's hive, ours has two iron wheels, the one fixed to the bottom of the hive, the other fixed to a stout board running the full length of the hive; on these two wheels the whole hive turns. In the centre there is an opening into the hive, with a passage-way running underneath, so that the bees' entrance is in no way affected by the position of the hive, which revolves to suit the convenience of visitors inspecting it. Should the queen with her attendants not be visible on one side, the other side of the comb can be brought into full view, and examined with the same facility as a picture, or as articles are inspected in a shop window. Thus, in the Unicomb Observatory Hive, the sovereign mother, her train of servitors, the drones with their aimless movements, and the crowd of ever busy workers--either building their combs or storing honey--may be always seen as presenting a veritable "Tableau vivant." Another improvement that we have made upon Mr. Woodbury's pattern is that of accommodating the frames; his was constructed before frame hives were in use, consequently it is only suitable for combs on bars. Our adaptation has necessitated an increase in size. The dimensions are nearly 3 feet square and 7 inches deep from back to front. Provision is made at top for feeding and for working two small flat top glasses for deprivation, which are protected by the weather board. An alighting board is placed at the centre, close under the entrance, when the hive is located out of doors. When the hive is placed indoors, a passage-way about 18 inches long, covered with glass, is fixed to the entrance, the other end communicating with an opening in the wall or sash; through this the bees find access, an alighting board being fixed outside the building. It is requisite that the passage-way be about this length, in order to allow of the hive turning round clear of the side of the building.