number carved in stone covered with lichen 1870

1870 abstract aged anno annum areolate born botany bridge brooklyn bureau cemetery century chronology civil clean cleaning close common craftsmanship cryptogamia cryptogamic cryptograms date decade department died dimelaena discolored domini emancipation era events founded franco fraternity funerary geologic geology gravestone historical history justice lepraria leprose lichenology macrolichen manifesto marias masonry massacre mdccclxx millenium neglect neglecta numerology obscuratum oreina polsporina prussian reconstruction rhizocarpon rock simplex society spores stonework texture thalli thallus timestamp ugly unsightly values weather year ymca