■We have come in search of truth, 

 Trying with uncertain key 

 Door by door of mystery." 



-John G. Whittier, in " The Prayer of Agassiz." 



"to solve the problem of the forms of living things is the aim with which the 

 naturalist of to-day comes to his work. how have living things become what they are, 

 and what are the laws which govern their forms? these are the questions which the 

 naturalist has set himself to answer. 



" Many of the problems of Variation are pre-eminently suited for investigation by 



SIMPLE MEANS. If WE ARE TO GET FURTHER WITH THESE PROBLEMS, IT WILL BE DONE, I TAKE IT, 

 CHIEFLY BY STUDY OF THE COMMON FORMS OF LIFE. ANYONE CAN TAKE PART IN THIS CLASS OF 

 WORK, THOUGH FEW DO." 



— William Bateson, in " Study of Variation." 



I'T-^u^rV-*) 



