iMOUS MEN OF SCIENCE 



BY 



SARAH K. BOLTON 



AUTHOR OF 



'SUCCESSFUL MEN WHO HAVE RISEN FROM THE RANKS 



" The heights by great men reached and kept 

 Were not attained by sudden flight ; 



But they, while their companions slept, 

 Were toiling upward in the night. 1 ' 



LONGFELLOW. 



SECOND EDITION 



HODDER AND STOUGHTON 



27, PATERNOSTER ROW 



