The pamphlet denounces the transatlantic slave trade and the brutal treatment of enslaved people in British territories, describing extreme labor demands, inadequate food and clothing, frequent corporal punishment, and high mortality. It compiles contemporary observations and published reports to argue that the trade contradicts Christian principles, natural justice, and common humanity. The author connects slavery to broader social and economic harms, such as broken families, moral corruption, and public insecurity. The work appeals to the conscience and influence of readers, urging inspection of the trade's corrupt motives and advocating for humane reform.