A Black Republican in tug Coolie Trade.Ihe New York correspondent of the Richmond Enquirer says that a friend who has recently visited Cuba, met there an acquaintance from Boston, who was a m rcbant of that ci y, and who, at home, was a Black Republican Abolition Negro-Worshiper. He learned from this man that hi* business in Cuba was to consummate a contract with planters and others for landing fifty thousand Cool cs in that Island within a given length of time, and that Boston ships weie to be employed in their transportation.The inhumanity of man to man in the Coolie slave trade is sa-d to surpass the worst forms of the African slave tiade. Thlt; usends die and arepitched overboard, before the vessel arrives, with as little cinmuny as if they were dead rats. On landing thvy are indentured for eight years; but are workod so hard and treated so severely, thut their physical organization, weaker than that of the Airican, soon gives way, and not one in ten survives the eight years's servitude.