"Contributors included Robert Bisset (1758/9–1805), John Bowles (1751–1819), Arthur Cayley (1776–1848), George Gleig, Samuel Henshall (1764/5–1807), James Hurdis, John Oxlee (1779–1854), Richard Penn (1733/4–1811), Richard Polwhele, John Skinner (1744–1816), William Stevens (1732–1807), and John Whitaker (1735–1808), though as items were frequently published anonymously attributions are often unclear.It denounced reformers, especially the Evangelicals, and greatly angered them, as William Wilberforce, a leader of the anti-slavery movement, made clear in 1800