iQTlo 



First Edition printed 1866. Second^ 1868. Reprinted 1869, 1870, 1871, 

 March and May, 1872. Third, October. 1872. Reprinted i&fi, 1874, '875, 

 1876, 1878, 1879, 1881, 1883, January, Fehruary, May, September {twice), 

 and November, 1884, Fourth, 1885. Reprinted 1886, i888, 1890, 1892, 

 January and September, 1893, 1896. Fifth, 1900. 

 Reptrinted 1902, 1905, 1908, 1911. 



Si.vth Edition 1915. Reprinted September, 1915; Aug. .it, 1916; 

 December, 1916; May, I9'i7. 



