Contemporary with Linnæus and DeGeer was Réaumur, of France, whose experiments and researches are of special interest to apiarists. Perhaps no entomologist has done more to reveal the natural history of bees. Especially to be commended are his method of experimenting, his patience in investigation, the elegance and felicity of his word pictures, and, above all, _his devotion to truth_. We shall have occasion to speak of this conscientious and indefatigable worker in the great shop of insect-life frequently in the following pages. Bonnet, of Geneva, the able correspondent of Réaumur, also did valuable work, in which the lover of bees has a special interest. Bonnet is specially noted for his discovery and elucidation of parthenogenesis--that anomalous mode of reproduction--as it occurs among the Aphides or plant-lice, though he did not discover that our bees, in the production of drones, illustrate the same doctrine. Though the author of no system, he gave much aid to Réaumur in his systematic labors. At this same period systematic entomology received great aid from Lyonnet's valuable work. This author dissected and explained the development of a caterpillar. His descriptions and illustrations are wonderful, and will proclaim his ability as long as entomology is studied, and they, to quote Bonnet, "demonstrate the existence of God." We have next to speak of the great Dane, Fabricius--a student of Linnæus--who published his works from 1775 to 1798, and thus was revolutionizing systematic entomology at the same time that we of America were revolutionizing government. He made the mouth organs the basis of his classification, and thus followed in the path which DeGeer had marked out, though it was scarcely beaten by the latter while Fabricius left it wide and deep. His classes and orders are no improvement on, in fact, are not nearly as correct, as were his old master's. In his description of genera--where he pretended to follow nature--he has rendered valuable service In leading scientists to study parts, before little regarded, and thus to better establish affinities, he did a most valuable work. His work is a standard, and should be thoroughly studied by all entomologists.