1900: 1, 1899: 1, 1896: N, 1895 (year order XXI.) Compounds: 1-12, 1895: N, 1894: N, 1893-1894 (year order XX.) Compounds: 1-12, 1893: N, 1892: N, 1891-1892 (year order XVII.) Compounds: 1-12, 1891: N, 1890: N, 1889-1890 (year order XVI.) Compounds: 1-12, 1889: N, 1888: N, 1887 (year order XIII.) Compounds: 1-12, 1887: N, 1886: N, 1885-1886 (year order XI.) Compounds: 1-12, 1884 (year order X.) Compounds: 1-12, 1883-1884 (year order X.) Compounds: 1-12, 1882 Compounds: 1-12, 1881-1882 (year order VII.) Compounds: 1-12, 1879-1880 (year order V.) Compounds: 1-12, 1879: N, 1878-1881 (year order IV.) Compounds: 1-12, 1878: N, 1877-1878: 3-4, 1877 (year order III.) Compounds: 1-12, 1877: N, 1876 (year order II.) Compounds: 1-12, 1876: N, 1875: N,