MECHANICS' INSTITUTIONS
... NIECHANICS' INSTITUTIONS. TO THE EDITOR OF THE DERRY MERCURY. e h . Sir,-Vill you allow me, through the medium of your a d columns, to call theattention of members of Mechanics' Insti- h *e tutions, Literary and Self Improvement Societies, in this c county, to the advantages to be derived from, aod the Qxpe-b n diency of being in union with, the Society of Arts. London.M During the summerof ...