DOCTRINE OF PROPORTION CLEARLY DEVELOPED, ON A COMPREHENSIVE, ORIGINAL, AND OR, THE FIFTH BOOK OF EUCLID SIMPLIFIED. BY OLIVER BYRNE, PROFESSOR OF MATHEMATICS, COLLEGE FOR CIVIL ENGINEERS; CONSULTING AUTHOR OF "THE NEW AND IMPROVED SYSTEM OF LOGARITHMS;" THE THE PRACTICAL, COMPLETE, INVENTOR OF "THE GAGER'S PATENT CALCULATING INSTRUMENTS;' no J. WILLIAMS, LIBRARY OF ARTS, No. 106, GREAT RUSSELL STREET, BLOOMSBURY. MDCCCXLI. |