When it is considered, as writers tell us, that more than 14 lbs. of honey are required for the secretion and elaboration of a single pound of comb, it will not be difficult to form a just estimate of the value of this invention, which thus furnishes cheap and excellent assistance to our industrious favourites. It also shows the bee-keeper that all clean empty combs should be carefully preserved and considered as valuable stock. Another great advantage that it affords us is, that it renders us independent of _guide-comb_, which is not always obtainable. When a sheet or a strip of this impressed wax is properly fixed to the comb-bar, it is _certain_ to be the guide and foundation of a straight comb. This invention has been derived from Germany, where it has been adopted many years with success. At the International Exhibition of 1862, we purchased the metal plates or castings, so as to manufacture the impressed sheets with which we are now able to supply our customers; and, after the careful trials we have made, we have great confidence in recommending them. In the season of 1863 we furnished a Woodbury glass super, with the wax sheets fixed to the bars, in the manner hereafter to be explained, and it was truly astonishing to see the rapidity with which these sheets of wax were worked into comb. Receptacles were quickly made ready for the storing of honey, and the new combs soon became beautifully white; for, although the artificial wax has a yellow tinge, yet, after being worked at and made thinner, it is as good in colour as ordinary combs. For supers we cut the wax plates in half, making one serve for two bars. We have received from Germany the following directions for the fastening of the artificial plates to the comb-bars. Hereafter will be described a plan which we have adopted, and to which preference is given. (_Translation._)--"The unstamped edge of the plate receives incisions half an inch distant from one another, made with a sharp knife, the plate having been a little warmed; then it is pinched between two equally strong ledges, which have been well moistened. The projecting edge of the plate which received the incisions is alternately bent to the right and to the left. The comb-bar is well besmeared with artificial sticking wax (a mixture of two parts of wax and one part of American resin), and is well warmed at a fire. Afterwards the besmeared side is laid upon the bent end of the plate, and pressed to it as firmly as possible. A small wooden ledge, besmeared with sticking wax, and fastened by means of pressure to the lower edge of the plate, prevents it from bending, which sometimes happens when the bees work it."