:

  •  
                                                          

    (1840-88)

    (1840-88)

    . 1862-64 - " ", "" "".

    -
    (Antoniadi) (1870-1944)
    (Buffer) ( .1928)
    (Azuela) (1873-1952)
    (Vasconcelos) (1882-1959)
    :