Directions for camping, emergency surgery, photography, etc., pp. 811-884. In concluding this list of references I would suggest to the student the desirability of securing the following catalogues or lists of publications. A glance at the lists in this volume will show that a surprisingly large number of the papers or works are governmental publications, many of which have long been out of print, but many may still be secured from the different departments or from the Superintendent of Documents at Washington, D.C. 1. U. S. Geological Survey. List of Publications, including maps. Washington, D.C. 2. Superintendent of Documents. Lists of publications of the U. S. Department of Agriculture. Washington, D.C. 3. Smithsonian Institution. List of publications. Washington, D.C. 4. U. S. National Museum. List of publications. Washington, D.C. 5. U. S. Bureau of Fisheries (formerly U. S. Fish Commission). List of publications. Washington, D.C. 6. For list of dealers in second-hand books see Banks’ Bull. 81, U. S. National Museum, pp. 117-118. This is one of the best methods of securing many publications which are out of print. _3. The Preparation of Papers for Publication and on Proof Reading_ The preparation of papers for publication is a practical phase of study and an art, or form of technique, about which the zoölogical student is liable to hear but little. There may be a great economy of effort, and much time saved, if early in his work the student realizes the need of cultivating the _habit_ of preparing all manuscripts in a form suitable for publication. While there is much variation in details, yet within certain limits there is a certain amount of standardization which should become _habitual_. Departures from such a standard necessitate much loss of time which must be devoted to revisions and corrections. One may work for years and fail to realize this fact, until he attempts to adjust his habits of writing to the requirements of the editors of scientific publications. The following references are intended to cover the main aspects of the preparation of manuscripts and the reading of proof. LEWES, GEORGE HENRY (Edited by F. N. Scott). 1891. The Principles of Success in Literature, pp. 163. Boston. Allyn and Bacon. A very sane little book on writing, a subject on which it is difficult to receive and apply advice. WENDELL, B. 1899. English Composition. pp. 316. New York. FERNALD, J. C. 1896. English Synonyms and Antonyms with Notes on the Correct Use of Prepositions. Tenth Edition. pp. 564. New York. 1904. Connectives of English Speech. The Correct Usage of Prepositions, Conjunctions, Relative Pronouns and Adverbs Explained and Illustrated. pp. 324. New York. ALLBUTT, T. C. 1905. Notes on the Composition of Scientific Papers. pp. 164. London. Macmillan Company. This book is by an experienced medical editor and contains many practical suggestions. RICKARD, T. A.