1862. The Elements of Euclid for the Use of Schools and Colleges, 1872 reprint. Comprising the first six books and portions of the eleventh and twelfth books with notes, an appendix, and exercises by Isaac Todhunter. This edition substantially reproduces Simson's; but his translation has been carefully compared with the original, and some alterations have been made. Reprinted 1864,1869,1871,1872,1874,1875,1876,1877,1878,1879,1880,1882,1883,1884,1886,1887,1889,1891,1894,1896.