The Manual Of North American Diptera (1908) is a comprehensive guide to the study of dipterology, written by Samuel Wendell Williston. The book is a detailed account of the taxonomy, morphology, and distribution of North American Diptera, which includes flies, mosquitoes, and gnats. The book is divided into two parts, the first of which provides an introduction to the study of Diptera, including its history, morphology, and classification. The second...