INTRODUCTION 

 TO SCIENCE 



BY 



J. ARTHUR THOMSON 



HEG/t/S PROFESSOR OF NATURAL HISTORY, ABERDEEN 



UNIVERSITY 



OF "DARWINISM AND HUMAN LIFE;" "HEREDITY;" 



THE BIOLOGY OF THE SEASONS ; " " HERBERT SPENCER ; " 



"THE SCIENCE OF LIFE ; " U THE PROGRESS OF SCIENCE 



IN THE CENTURY; " " THE STUDY OF ANIMAL LIFE;" 



" OUTLINES OF ZOOLOGY J " " THE NATURAL 



HISTORY OF THE YEAR" 



Joint author of ft The Evolution of Sex " and " Evolution" 



NEW YORK 

 HENRY HOLT AND COMPANY 



LONDON 

 WILLIAMS AND NORGATE 



SITY OF CATJFORNIA 



LIBRARY 



