1 86 NATIONAL ACADEMY OF SCIENCES 



His collection of minerals was bought by Cornell, and called 

 the Silliman Cabinet. Another collection was added to Yale 

 College Scientific School, and Professor Silliman personally 

 solicited the money to buy the mineralogical collection of Baron 

 de Lederer in 1843. 



During the World's Fair in New York in 1853, Professor 

 Silliman had charge of the departments of chemistry, miner- 

 alogy, and geology, and in 1869 he became one of the State 

 Chemists of Connecticut. 



He was a trustee of Peabody Museum and a member of numer- 

 ous European and American scientific societies. 



Of his principal writings, the " First Principles in Chem- 

 istry " was published in 1846, and " Principles of Physics" in 

 1854, an d "American Contributions to Chemistry" in 1875. 



Investigations in mineralogy and chemistry formed the basis 

 of Professor Silliman's scientific work, but he engaged also in 

 studies relating to geology, to meteorites, and to physical optics. 



(See ARTHUR W. WRIGHT, in Biographical Memoirs of the National 

 Academy of Sciences, vol. 7, pp. 115-141.) 



THEODORE STRONG 

 Born, July 26, 1790; died, February I, 1869 



Theodore Strong was descended from Puritan ancestors. His 

 father Joseph Strong and also his grandfather were clergymen of 

 the Congregational denomination. His mother, Sophia Wood- 

 bridge, was a daughter of the Rev. John Woodbridge of South 

 Hadley, Massachusetts. In this town Theodore Strong was born 

 on July 26, 1790, in the house of his uncle, Colonel Benjamin 

 Ruggles Woodbridge. Joseph Strong, having a large family of 

 children to provide for, was induced to transfer the respon- 

 sibility for the education and training of his son Theodore to 

 Colonel Woodbridge by whom he was practically adopted. 

 Theodore Strong's schooling began at an early age and when he 

 entered Yale College at eighteen he was well prepared in lan- 

 guages, though not in mathematics. Having, however, on one 

 occasion been subjected to ridicule by a classmate for his poor 



