Unanswerable arguments against the abolition of the slave trade [electronic resource] : with a defence of the proprietors of the British sugar colonies against certain malignant charges contained in letters published by a sailor and by Luffman, Newton, &c. : remarks on the dispositions and characters of the African slaves and means for the distribution of their labour : the regulation of their habitations, foods, cloathing, and religious instruction : the accomodation of the sick and cure of their diseases, which may be most conducive to render them faithful, obedient, and happy / by James M. Adair ; published for the benefit of the starving tin-miners in Cornwall.