“Ninety of the slides are in connection with Messrs. Chapman and Hall's 11 Underground Life,' illustrating the history, modes, and difficulties of procuring coal and other minerals. Inter alia we have Fossils in Coal (14), Explosions, Engineer's Critical Situation, Prisoners Condemned to the Mines in Mexico. The latter 40 slides show Wigan Colliery Girl at Work, the Same Girl on Sunday, Section of Pit on Fire, Boring the Channel Tunnel, Prince of Wales descending Botallack Mine, Gold-digging in Australasia, etc.”