From Langstroth's Hive And the Honey-Bee: "No part of the interior of the hive should be below the level of the place of exit. If this principle is violated, the bees must, at great disadvantage, drag, up hill their dead, and all the refuse of the hive. It should afford facilities for feeding bees, both in warm and cold weather. In this respect, the moveable-comb hive has unusual advantages. In warm weather, sixty colonies may, in less than an hour, receive each a quart of food, without any feeder, and with no risk from robber-bees. It should permit the easy hiving of a swarm, without injuring any bees, or risking the destruction of the queen. It should admit of the safe transportation of the bees to any distance whatever."