SURVEYS. 
255 
Ordnance Survey (continued). 
Comparisons of the Standards of Length of England, France, 
Belgium, Prussia, Russia, India, Australia, made at the Ord- 
nance Survey OflSce, Southampton, by Captain A. R. Clarke, 
under the direction of Colonel Sir Henry James. 
4.0. London, 1866. 
Determination of the Positions of Traghmain and Haverfordwest 
Longitude Stations on the Great European Arc of Parallel. 
Being an Appendix to the Account of the Principal Triangulation 
of Great Britain and Ireland. By Captain A. R. Clarke, under 
the direction of Colonel Sir Henry James. 4P. London, 1867. 
UNITED STATES. 
Boundary Surveys. 
Maryland, Pennsylvania, and. Delaware. Message from the 
Governor of Maryland, transmitting the Reports of the Joint 
Commissioners, and of Lieut.-Col. Graham, U. S. Engineers, in 
relation to the Intersection of the Boundary Liues of the States 
of Maryland, Pennsylvania, and Delaware. 
8«. Washington, 1850. 
Second Edition. 8«. Chicago, 1862. 
United States and Mexican Boundary. Report on the United 
States and Mexican Boundary Survey. By W. H. Emory. 
2 vols. 4p. Washington, 1857-59. 
Botanical Reports by Engelmann, Parry, Torrey. 
G-eological Eeports by Conrad, Hall, Parry, Schott. 
Zoological Eeports by Baird and Grirard. 
United States Northern Boundary Commission. Appendix H. 
(Fixed Star Declinations.) See Observations and Reports : 
Washington. 
Coast Survey. 
Reports of the Superintendent of the United States Coast Survey, 
1844-45, '45-46, '46-47, '47-48, '48-49, '49-50, '50-51. 
8«. Washington, 1848-52. 
Sketches accompanying Report for 1851. 4**. 
Reports of the Superintendent of the Coast Survey, showing the 
Progress of the Survey during the years 1853-75. 
4«. Washington, 1854-78. 
Pacific Coast Pilot. Coasts and Islands of Alaska. Second 
Series. 4«. Washington, 1879. 
Meteorological Researches for the use of the Coast Pilot. Part 1. 
By William Ferrel. AP. Washington, 1877. 
