Vols. I-XI were issued in the Congressional series of U.S. public documents as 33d Cong., 2d sess. House ex. doc. 91, and also as Senate ex. doc. 78. Vol. XI was issued also (1861) as 36th Cong., 2d sess. Senate ex. doc. [no number] Supplement to vol. I (the material of which was published also in vol. XII, book I and book II) was issued in at least three forms: Supplement to vol. I, 1859, W. A. Harris, printer, as 35th Cong., 2d sess. Senate ex. doc. 46--Vol. XII, book I-II, 1860, T. H. Ford, printer, as 36th Cong., 1st sess. House ex. doc. 56, and Senate ex. doc. [no number] The reports of the Pacific railroad surveys were prepared under the direct supervision of the Engineer department. The volume dealing with the soil, climate, geology, botany and zoology of the regions surveyed were edited and revised by Professors Henry and Baird, of the Smithsonian Institution. cf. Ingersoll, Hist. of the War Department, 1879, p. 292-293 For further information concerning the publication of the work and a list of serial numbers assigned to the volumes in the Congressional series of documents, see Checklist of United States public documents. 1911, p. 1274-1975 I. Introduction. Route near the 47th and 49th parallels.--II. Routes near 38th and 39th, 41st, and 32nd parallels. Lander's report.--III-IV. Route near the 35th parallel.--V. Routes in California to connect with those near the 35th and 32nd parallels.--VI. Routes in Oregon and California.--VII. Route in California to connect with those near the 35th and 32nd parallels. Route between the Rio Grande and Pimas villages.--VIII. Mammals of the several routes.--IX. Birds of the several routes.--X. Reptiles and fishes of the several routes; zoological reports on routes near 38th and 39th, 41st, 35th and 32d parallels; on routes in California to connect with those near 35th and 32d parallels; reptiles of routes in California and Oregon.--XI. Material used and methods employed in compiling the general map. Topographical maps, etc.--XII. Route near the 47th and 49th parallels (concluded) History of Science copy 1: Provenance: J.A. Robinson (signature, v.9) History of Science copy 1: Gift of the School of Civil Engineering