THE PROGRESS OF SC1EXCE. 



2 95 



II'. .1/. Flickinger, Photographer. 



Thomas Messinger Drown. 



leading American and German mas- 

 ters. For seven years he occupied the 

 chair of analytical chemistry at Lafay- 

 ette College, and for ten years a simi- 

 lar chair at the Massachusetts In- 

 stitute of Technology. One of the 

 founders of the American Institute of 

 Mining Engineers, he served with 

 conspicuous efficiency for ten years as 

 its first secretary and editor of its 

 Transactions, being later elected to 

 honorary membership and in 1897 to 

 its presidency. Dr. Drown did im- 

 portant original work in quantitative 



analysis in two directions. In metal- 

 lurgy he devised methods which have 

 become standard in the analysis of 

 iron and steel. In sanitary chemistry 

 1 he introduced improvements both in 

 the methods and in the interpretation 

 of water analysis. As chemist in 

 charge of the investigation of the nat- 

 ural waters of Massachusetts, he in- 

 stituted a series of investigations 

 which resulted, among other things, in 

 the unique map showing the distribu- 

 tion of 'normal chlorine' in the springs 

 and wells of the entire state. Dr. 



