14 CHARLES ANTHONY GOESSMANN 



action of iodide of ethyl on tungstate of silver a com- 

 pound of oxide of ethyl and tungstic acid. In this he 

 did not succeed, but obtained iodide of silver, free 

 tungstic acid, and oxide of ethyl. He showed that ani- 

 line is obtained when nitrobenzene is treated with 

 caustic soda and arsenic trioxide an investigation 

 completed by Wohler. 



The year 1857 saw the completion of Goessmann's 

 researches in the field of pure chemistry, and with it 

 concluded the period of his most important discoveries. 

 He soon attained, however, a leading place among 

 technical chemists in the country of his adoption, and 

 his advice was often sought on important questions. 

 His attention was thus turned from purely scientific 

 subjects to matters of more practical interest. 



While a teacher at Gottingen he numbered among 

 his American pupils and friends Caldwell of Cornell, 

 Chandler of Columbia, Clark of Amherst, Garrigues of 

 Michigan, Hungerford of Vermont, Joy of Union, 

 Mallet of Virginia, Marsh of Illinois, Nason of Rens- 

 selaer, Pugh of Pennsylvania, and Weyman of Pitts- 

 burgh. Anton Geuther, afterwards called to Jena, was 

 likewise a pupil of his and his immediate successor at 

 Gottingen. The testimonials he received bear witness 

 to the esteem in which he was held by his fellow work- 

 ers and students. One of the most gratifying was a 

 beautiful balance from his American students in- 

 scribed with their names. 1 At his departure from 

 Gottingen his pupils presented him with a silver lov- 



1 The plate bears the following inscription: 'Presented to Dr. Goess- 

 mann by J. Dean, C. Chandler, E. Pugh, G. C. Caldwell, E. P. Eastwick, 

 J. H. Eastwick, J. F. Magee, D. K. Tuttle, J. D. Hague, H. P. Nason.' 



