Much historical, geographical, and ethnological information has been collected in the new edition of the _Imperial Gazetteer of India_, the _Bombay Gazetteer_ edited by Sir J. M. Campbell, and, more particularly, in the revised _Gazetteer of Rajputana_, including that of Mewār and the Western States Residency and Bīkaner Agency by Lieutenant-Colonel K. D. Erskine, and that of Ajmer by Mr. C. C. Watson. Lieutenant-Colonel Erskine’s work, based on the best local information, has been of special value, and it is much to be regretted that this officer, after serving as Consul-General at Baghdad, was invalided and died in England in 1914, leaving that part of the _Gazetteer_ dealing with the Eastern States, Jaipur, Kotah, and Būndi, unrevised. For botany, agriculture, and natural productions I have used Sir G. Watt’s _Dictionary of the Economic Products of India_, and his _Commercial Products of India_; for architecture and antiquities, J. Fergusson’s _History of Indian and Eastern Architecture_, edited by Dr. J. Burgess, and _The Cave Temples of India_ by the same writers. In ethnology I have consulted the publications of the Ethnological Survey of India, of which Mr. H. A. Rose’s _Glossary of the Tribes and Castes of the Punjab and North-West Frontier Province_, Mr. Bhimbhai Kirparam’s account of the Hindus and Khān Bahādur Fazalullah Lutfullah’s of the Musalmāns of Gujarāt, published in the _Bombay Gazetteer_, vol. ix. Parts i. ii., have been specially valuable. Besides the general works to which reference has been made, many articles on Rajputana and the Rājputs will be found in the _Journal of the Royal Asiatic Society_ and its Bombay branch, in the _Journal of the Asiatic Society of Bengal_, and in the _Indian Antiquary_, and other periodicals. The Reports of the Archaeological Survey of India conducted by Sir A. Cunningham, Dr. J. Burgess, and Sir J. H. Marshall, are of great importance.