CONCHOID, in Geometry, the name of a curve, given to it by its inventor Nicomedes. See FLUXIONS.
ITS that department of natural history which treats of testaceous animals. In the Linnean arrangement it constitutes the third order of the class of Vermes. This is the order testacea, of which we propose to lay
VOL. VI. Part I.
before our readers a pretty full view in the present treatise. The peculiarity and extent of this order of animals have induced us to consider it in a separate treatise, by which means we shall avoid swelling out to