PREFACE. 



IT is hoped that the experience of many into whose hands 

 this book may come will suggest a reason for its preparation. 

 The great activity of German scholars along all lines of science, 

 and the richness of their scientific literature make it imperative 

 that all who wish to keep abreast of advancing knowledge should 

 read with ease technical German. 



The scope of the work is apparent at a glance. The selections 

 have been taken from actual publications, most of them from 

 text-books on science, and none have been written to fit a pre- 

 concerted plan. In the vocabulary will be found all scientific 

 terms or words used in a technical sense, together with such 

 other words as may be forgotten because of infrequent use. 



I desire to give expression to my deep sense of gratitude 

 to Professor E. S. JOYNES, and to my friend and colleague Dr. 

 HERMANN SCHONFELD for important suggestions and careful read- 

 ing of proof. 



J. HOWARD GORE. 



COLUMBIAN UNIVERSITY, 



July, 1891. 



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