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7405 

 PREFACE 'i^,^, 

 )9M 



The List of Books on the History of Science, which was issued in iqii, 

 recorded the books available in January of that year, numbering some 

 1500 titles. Since then, however, a large amount of material on this 

 subject has been received and not a few have been catalogued from the 

 Gerritsen and Senn collections. This addition has been large enough to 

 make it worth while to issue a supplement to the previous list, and it is 

 hereby offered as the twelfth of the Library's bibliographical publications. 

 It contains nearly 800 titles. In 1915 a List of Books on the History of 

 Industry and Industrial Arts, containing about 3300 titles, was issued as the 

 eleventh publication. These three lists bring together a large and important 

 class of books the titles of which are widely scattered through the classed 

 catalogue and not readily available there as a class. 



The present list has the same scope and character as the first; it covers 

 the social, physical, natural and medical sciences, while their technical ap- 

 plications are covered in the list on the history of industry. It deals 

 with the history of the sciences; it does not deal with the history of move- 

 ments or activities. The history of economics, for instance, is included here, 

 while economic history is included in the List of Books on the History of 

 Industry. 



In the preface to the earlier volume quotations were made from writings 

 of some historians of science. To this it seems fitting to add, as apropos 

 of the times, two statements by two well known scientists, the one a German, 

 the other a Belgian. The former discusses the comparative value of what is 

 known as general history and the history of science, the second refers in a 

 way that seems almost pathetic, to the relation of science to peace, and of 

 scientists to internationalism. 



In one of Julius Pagel's monographs on Henri de Mondeville we read 

 the following: 



"Different from the general history of world events is the history of 

 science. There the roads are marked by blood and smoking ruins, here by 

 the quiet mental labor of the peace loving, diligent scholar and investigator; 

 there the macchiavellian arts of the diplomats, fraud and intrigue, here 

 truth, honesty and light; there strife of the bodies with weapons of iron and 

 often the supremacy of brute power, here strife indeed,— for without strife 

 and without opposite views no evolution, no progress is possible — but it is 

 a strife of opinions and a manifestation of the free activity of the spirit; 

 there not seldom victory of the unrighteous, here always of the righteous, 

 there often despotism and compulsion, here liberty and inner peace; there 

 hatred and rancor between the nations, here communion of the nations and 

 all civilized countries in noble competition; there secrecy — decades, yes 

 centuries pass before the veil of official secretiveness is lifted, showing the 

 purposes and origins of actions of state, — here full publicity, for only in the 



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