1 6 Preface, 



those gentlemen who have given him their sug- 

 gestions by private letters, as well as for the public 

 reviews, which, so far as he has seen, have, with a 

 single exception, been distinguished for fairness 

 and an intelligent treatment of the subject. 



The author desires now to renewedly call the 

 attention of Naturalists and Psychologists to 

 the discussions here commenced, satisfied as he is 

 that here is a field calling for their combined study 

 for its successful investigation, and one worthy of 

 their best efforts. New facts can be gathered by 

 careful observers every year, but no new facts in 

 kind have appeared among all the recent labors of 

 distinguished naturalists. The origin, office, and 

 limit of Instinct in animals and men are subjects 

 still pressing upon the Psychologist as well as 

 Naturalist for the careful consideration of both. 



Amherst, Mass., 

 July I, 1882. 



