The success with which the principles of any art or science are investigated, is generally proportioned to the number of those, whose labours are directed to its cultivation and improvement. Inquiry is necessarily the parent of knowledge; error itself, proceeding from discussion, leads ultimately to the establishment of truth. The author indeed is fully persuaded, that it is impossible to examine the English language with any degree of critical accuracy, and not perceive, that its syntactical principles especially are yet but imperfectly illustrated, and that there are many of its idioms, which have entirely eluded the attention of our grammarians. That these defects are all supplied by the present work, the author is far from having the vanity to believe.