... would have been to my scientific friends!... 
Mary H. Kingsley 「Travels in West Africa」
...A comparative study of the diseases of the western division of thecontinent would, I should say, repay a scientific doctor, if he survived...
Mary H. Kingsley 「Travels in West Africa」
...Its residences, as I have said,have been built after the most approved scientific principles ofventilation and sanitation...
Richard Harding Davis 「The Congo and Coasts of Africa」
...It is of stone, built upon scientific principles, with embrasures for cannon and loop-holes for musketry...
Horatio Bridge 「Journal of an African Cruiser」
...There is no scientific program for its "reform...
W. E. B. Du Bois 「Darkwater」
...We opened a dairydepartment in connection with the school, where a number of young mencould have instruction in the latest and most scientific methods of dairywork...
Booker T. Washington, et al. 「The Negro Problem」
...Much intensive monographic work in history and science is neededto clear mooted points and quiet the controversialist who mistakespresent personal desire for scientific proof...
W.E.B. Du Bois 「The Negro」
...It is impossible to separate the population of the world accuratelyby race, since that is no scientific criterion by which to divide races...
W.E.B. Du Bois 「The Negro」
...Professor Marvin commencedhis scientific work, and his several stations were all remote fromheadquarters; and all winter long, parties were sledging provisions,equipment, etc...
Matthew A. Henson 「A Negro Explorer at the North Pole」
...The education has been altogether in thedirection of belles lettres, however, and practically little in thedirection of industrial and scientific education...
Booker T. Washington 「The Future of the American Negro」
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