To ascertain the degree of heat in a colony of Bees, and to regulate it by means of ventilation, as circumstances may require, recourse must be had to the use of the thermometer, as will be explained presently. But here I would ask my worthy Bee-keepers, whether, in the course of their experience, they have at any time beheld a honey-comb suspended beneath the pedestal of any of their hives--a circumstance that not unfrequently occurs under old stools? The beautiful appearance of a comb suspended in such a situation is, as it were, the very finger of Providence, pointing out the effects of ventilation, and teaching us by an example the necessity there is for it in a crowded, busy hive. Behold the purity of such a comb; examine the cause of that purity, and you will find that it is owing--solely and undoubtedly owing--to the powerful influence of VENTILATION. An occurrence of this description, I mean--the discovery of a beautiful comb suspended, as just described, having excited my curiosity and my admiration, led me to inquire into the cause of it, and to study to discover, if by any means I could, why my skilful, little Bees should have constructed their combs in such a situation. My observations soon satisfied me that one of these two causes, viz. either a want of room in the hive,--or a disagreeable and oppressive heat in it,--or most probably, a combination of these two causes, had rendered it necessary for them, if they continued working at all, to carry on their work in that singular manner. My next step was to endeavour to prove the truth of my reasonings and conclusions, in which, I flatter myself, I have fully succeeded, after no inconsiderable labour, and many contrivances to accommodate the Bees with additional room, as they have had occasion for it, and after repeated experiments to keep such room, when added, at a temperature agreeable to them by means of ventilation. In short, my COLLATERAL-BOXES and VENTILATION are the results of my studies and experiments on this point of apiarian science.