Excerpt from the Letter of Transmittal: The list includes references to irrigation and land drainage principally, but it has been deemed advisable to include, also, references to a few allied subjects, such as hydraulics, and some departments of engineering. No attempt has been made to catalogue articles in periodicals except in the following cases, namely: Transactions and Proceedings of the American Society of Civil Engineers, Transactions and Proceedings of the Technical Society of the Pacific Coast, Minutes of Proceedings of the Institute of Civil Engineers, Journal and Proceedings of the Royal Society of New South Wales, and Annales des Ponts et Chausses: Memoires et documents.