Discoveries on the Sex of Bees, Explaining the Manner in Which Their Species is Propagated; With an Account of the Utility That May Be Derived from Those Discoveries by the Actual Application of Them to Practice. By Mr. John Debraw, Apothecary to Addenbrook's Hospital at Cambridge, and Member of an Oeconomical Society in the Principality of Liege in Westphalia. Communicated by the Rev. Nevil Maskelyne, B. D. F. R. S. and Astronomer Royal