600 LOUIS AGASSIZ. 



ties, I am convinced also that no efforts should 

 be spared to check that which is inconsistent 

 with the progress of a higher civilization and 

 a purer morality. I hope and trust that as 

 soon as the condition of the negro in the 

 warmer parts of our States has been regulated 

 according to the laws of freedom, the colored 

 population in the more northern parts of the 

 country will diminish. By a natural conse- 

 quence of unconquerable affinities, the colored 

 people in whom the negro nature prevails will 

 tend toward the South, while the weaker and 

 lighter ones will remain and die out among 

 us. 



Entertaining these views upon the funda- 

 mental questions concerning the races, the 

 next point for consideration is the policy to 

 be adopted under present circumstances, in 

 order to increase the amount of good which is 

 within our grasp and lessen the evil which we 

 may avert. This will be for another letter. 

 Very truly yours, 



Louis Agassiz. 



FBOM THE SAME TO THE SAME. 



August 10, 1863. 



My dear Doctor, — I am so deeply im- 

 pressed with the dangers awaiting the prog- 



