400 WILLIAM PETIT TROWBRIDGE. 



While at the Novelty Iron Works he designed a cantilever bridge 

 for the East River at Blackvrell's Island, and a company vras formed 

 in 1869-70 to carry out the project, but the panic of 1873 put an end 

 to all efforts to build it. While at the Sheffield School, he designed 

 a coil boiler, intended to incorporate the most advanced ideas of forced 

 circulation of v^ater, automatic supply of feed water from a magazine, 

 and self-feeding of fuel. Its manufacture was turned over to a com- 

 pany. He also gave much thought to deep-sea sounding. He was a 

 member of the Century Club; was Adjutant General of Connecticut 

 from 1870 to 1876 ; commissioner for building a bridge across the 

 Quinnipiac River from 1870 to 1876; commissioner for building the 

 Capitol at Hartford from 1873 to 1878; commissioner for establishing 

 harbor lines at New Haven from 1872 to 1878 ; and he was also one 

 of the three commissioners appointed by Governor Cornell to examine 

 the State Capitol at Albany. 



He was a member of the New York Academy of Sciences, of the 

 American Society of Mechanical Engineers, an Associate Fellow of the 

 American Academy of Arts and Sciences, and also of the National 

 Academy of Sciences. 



He received the degree of A. M. from Rochester University in 

 1856, and from Yale in 1870 ; of Ph. D. from Princeton in 1880 ; and 

 that of LL. D. from Trinity in 1882, and from Michigan University in 

 1887. In 1880 he was at the head of the Department of Power and 

 Machinery for the Tenth Census. The treatise which he published on 

 Heat and Steam is well known among engineers. 



The following is a list of his works in the United States Coast and 

 Geodetic Survey Reports : — 



1851. Triaugulation, Maine. 



1852. Triaugulation, Maine. Triangulation, Appomattox River. 



1853. Triaugulation, James River. Tides of the Western Coast. 



1854. Tidal and Magnetic Observations. Eclipse Observations. 



1855. Tidal and ]Magnetic Observations. Earthquake Waves. Descrip- 



tion of Bodega Bay. 



1856. Tides, Hudson River. 



1857. Wind Observations. 



1858. Office Work. Law of Descent of Weight in Deep-sea Soundings 



Comparative Cost and Progress of Geodetic Surveys. Cost and 

 Progress of Coast Survey Work. 



1859. Researches. Deep-sea Sounding Apparatus. 



1860. Gulf Stream Examinations, Report on Magnetic Station at Key 



West. 



1861. Hydrography, Bristol Bay. Report on Sounding xVpparatus. 

 1874. Magnetic Observations at Key West between 1800 and 1866. 



