TESTIMONY OF HENRY MORTON. 97 



THURSDAY, DECEMBER 21, 1876. 



HENRY MORTON, sworn and examined by Mr. PRENTICE, testified as 

 follows : 



Q. Dr. Morton, you are a chemist by profession, are you ? A. 

 I am a physicist. 



Q. Ifou are President of the Stevens Institute ? A. The Stevens 

 Institute of Technology in New Jersey. 



Q. State how long you have been in this profession and the 

 places you have occupied and your experience ? A. I have been 

 engaged in the study and investigation of subjects involved in the 

 science of chemistry and physics since my boyhood ; I have occupied 

 the position of Professor of Chemistry in the University of Penn- 

 sylvania in Philadelphia, and Professor of Chemistry in the Phil- 

 adelphia Dental College ; I have for the last seven years been tLe 

 President of the Stevens Institute and in connection with my 

 duties there have given instruction in physics more especially and 

 in the use of various physical instruments, and during the same 

 time have carried on various investigations in the subjects of chem- 

 istry and physics ; that is, investigations which involve questions 

 of chemistry and physics. 



Q. You are familiar with the processes and manipulations in- 

 volved in the use of scientific instruments and the prosecution of ex- 

 periments and scientific researches on the subject ? A. I believe 

 that I am. 



Q. Have you published the results of original investigations on 

 scientific subjects ? A. I have in a number of instances. 



Q. And have these been republished in foreign journals ? A. 

 They have in England, in France, and in Germany. 



Q. Do you know the class of instruments called hydrometers ? 

 A. I do. 



Q. And the lactometer, you are acquainted with its use ? A. 

 I am. 



Q. And have you used such frequently in your investigations ? 

 A. I have. 



Q. How general is the use of these hydrometers in manufactories 

 and stores for the purpose of showing in what proportion various 

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