Keane's _The World's Peoples_.

Sir George Grierson's great work, _The Linguistic Survey of India_, has now given an accurate classification of the non-Aryan tribes according to their languages and has further thrown a considerable degree of light on the vexed question of their origin.

I have received from Mr.W.Crooke of the Indian Civil Service (retired) much kind help and advice during the final stages of the preparation of this work.

As will be seen from the articles, resort has constantly been made to his _Tribes and Castes_ for filling up gaps in the local information.
Rai Bahadur Hira Lal was my assistant for several years in the taking of the census of 1901 and the preparation of the Central Provinces District Gazetteers; he has always given the most loyal and unselfish aid, has personally collected a large part of the original information contained in the book, and spent much time in collating the results.

The association of his name in the authorship is no more than his due, though except where this has been specifically mentioned, he is not responsible for the theories and deductions from the facts obtained.