William Kirby, an English naturalist, born at Witnesham, Suffolk, Sept. 19, 1759, died at Barham, July 4, 1850. He graduated at Caius college, Cambridge, in 1781, took orders, and was appointed to the curacy of Barham. At the end of 14 years he became the rector of the parish. In 1802 appeared his Monographia Apium Anglice (2 vols., Ipswich), the first scientific English work of its class. Several years later he joined Mr. Spence of Hull in a project for preparing a popular treatise on entomology, the result of which was the publication in 1815 of the first volume of "Kirby and Spence's Introduction to Entomology;" the second volume appeared in 1817, and the third and fourth in 1826. In 1830 he produced a Bridge-water treatise on the " Habits and Instincts of Animals with reference to Natural Theology," and he subsequently wrote the description of insects in Sir John Richardson's Fauna Bore-ali-Americana, besides several minor works. His biography was written by the Rev. John Freeman (London, 1852).