TABLE OF COINCIDENCE 
OF BROODS OF PERIODICAL CiCADA 
I 
II 
III 
IV 
V 
VI 
VII 
VIII 
IX 
X 
XI 
XII 
XIII 
XIV 
XV 
XVI 
XVII 
XVIII 
1776 
XIX 
1777 
XX 
1791 
1778 
XXI 
1792 
1779 
XXII 
1793 
1780 
XXIII 
179"» 
1781 
XXI? 
1808 
1795 
1782 
XXT 
1809 
179= 
1783 
XXTI 
1810 
1797 
1731* 
XXVII 
1811 
1798 
1785 
XXVIII 
1825 
1812 
1799 
1786 
XXIX 
1826 
I813 
1800 
1787 
XXX 
1827 
18 Ik 
1801 
1788 
XVIII 
1828 
1815 
1802 
1789 
xix kgiia 
182° 
1816 
18C3 
1790 
XX 
181*3 
1830 
1317 
isoi- 
XXI | 
181* 
1831 
181i 
140? 
XXIT 
181*5 
1832 
1819 
1806 
XXIII 
1S59 
18U6 
1833 
1820 
1307 
XXIV 
I860 
1S>*7 
183U 
1821 
XXV 
1861 
1SU8 
I835 
1822 
XXVI 
1S62 
18U9 
1836 
1823 
xxvil 
187c 
1863 
1850 
1837 
182U 
xxvin 
1877 
186U 
1851 
1838 
XXIX 
1878 
I865 
1852 
IB39 
XXX 
1S79 
1866 
1853 
181*0 
XVIII 
1893 
I860 
1867 
I85U 
18U1 
xix 
i«Sl 
1868 
1855 
XX 
1895 
1882 
i860 
1856 
XXI 
1?96 
is?3 
1870 
1857 
XXII 
1910 
1897 
1881* 
1871 
1858 
mil 
1911 
1898 
1885 
1672 
xx rv 
1912 
1899 
1866 
1873 
XXV 
1913 
1900 
1887 
1S7>* 
XXVI 
IS?? 
19 lit 
1901 
1888 
1875 
XXVII 
1928 
1915 
1?02 
1889 
XXVIII 
1929 
1916 
1903 
1850 
XXIX 
1930 
1917 
1901* 
1891 
XXX 
191* 
1931 
19 18 
1905 
1892 
mil 
19U5 
1932 
1919 
1906 
XIX 
191*6 
1933 
1920 
1907 
XX 
19"*7 
19 3U 
1=21 
1908 
XXI 
1961 
19U8 
1935 
1°22 
1909 
XXII 
1962 
191*9 
193° 
1923 
XXXII 
1963 
1950 
1937 
1921* 
XXIV 
196U 
1951 
1938 
1925 
XXV 
1965 
1952 
1939 
1926 
XXTI 
1966 
1953 
191*0 
XXVII 
1967 
195U 
191*1 
XXVIII 
1968 
1955 
191*2 
XXIX 
1969 
1956 
I9U3 
XXX 
1970 
1957 
XVIII 
1971 
1958 
XIX 
1972 
1959 
XX 
1973 
i960 
