1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 



15-9 



•7 - 



Fig. 16. 



1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 



•5 - 



•3 - 



Fig. 17, 



Wi 3389-28 750 il/14 - lif. * E. 



