"As it is desirable that the reader should thoroughly comprehend this subject, I will re-state it in other words. The partition which separates the two opposing rows of cells, and which occupies, of course, the middle distance between their two surfaces, is not a plane but a collection of rhombs, there being three at the bottom of each cell: the three together form in shape, a flattened pyramid, the basis of which is turned towards the mouth of the cell; each cell is in form, therefore, a hexagonal prism, terminated by a flattened trihedral pyramid, the three sides of which pyramid are rhombs, that meet at the apex by their obtuse angles. "The union of the lozenges in one point, in addition to the support which it is the means of affording to the three partitions between opposing cells, is also admirably adapted to receive the little egg and to concentrate the heat necessary for its incubation. "Each obtuse angle of the lozenges or rhombs forms an angle of about 110 degrees, and each acute one, an angle of about 70 degrees. Mr. Maraldi found by mensuration that the angles of these rhombs, which compose the base of a cell, amounted to 109 degrees and 28 seconds, and 70 degrees and 32 seconds: and the famous mathematician Koenig, pupil of the celebrated Bernoulli, having been employed for that purpose by M. Reaumur, has clearly shown, by the method of infinitesimals, that the quantity of these angles, using the least possible wax, in the cell of the same capacity, should contain 109 degrees and 26 seconds, and 70 degrees and 34 seconds. This was confirmed by the celebrated Mr. Mac Laurin, who very justly observes, that Bees do truly construct their cells of the best figure, and with the utmost mathematical exactness. "The construction of several combs is generally going on at the same time. No sooner is the foundation of one laid, with a few rows of cells attached to it, than a second and a third are founded on each side, parallel to the first, and so on, (if the season give encouragement to the operations of the Bees,) till the hive is filled with their works; the first constructed comb or combs being always in the most advanced state, and therefore the first to be completed. "_The design of every comb is sketched out, and the first rudiments are laid by one single Bee._ This founder-Bee forms a block, out of a rough mass of wax, drawn partly from its own resources, but principally from those of other Bees, which furnish materials, in quick succession, from the receptacles under their bellies, taking out the plates of wax with their hind feet, and carrying them to their mouths with their fore feet, where the wax is moistened and masticated, till it becomes soft and ductile.