The following pages embody a study of Islám during a residence of fifteen years in India, the greater part of which time I have been in daily intercourse with Musalmáns. I have given in the footnotes the authorities from which I quote. I was not able to procure in Madras a copy of the Arabic edition of Ibn Khaldoun's great work, but the French translation by Baron M. de Slane, to which I so frequently refer, is thoroughly reliable. The quotations from the Qurán are made from Rodwell's translation. The original has been consulted when necessary.