Observations on the probable consequences of even attempting by legislative authority to obtain a large supply of coal from Staffordshire to the metropolis; on the iron trade in Staffordshire and Shropshire in the large way; on the iron and copper trades at Birmingham in the small way; on the price of coal to the inhabitants of London and Westminster; on the collieries in the north; on the carrying trade of Sunderland and Shields; and on the navy of Great Britain. In a letter to William Manning