The Mines and Its Wonders

Popular adventure novel, first published around 1900. According to Wikipedia: "William Henry Giles Kingston (28 February 1814 - 5 August 1880), writer of tales for boys, was born in London, but spent much of his youth in Oporto, where his father was a merchant... His first book, The Circassian Chief, appeared in 1844. His first book for boys, Peter the Whaler, was published in 1851, and had such success that he retired from business and devoted himself entirely to the production of this kind of literature, in which his popularity was deservedly great; and during 30 years he wrote upwards of 130 tales."