CHAPTER 19.. 1860-1863: Age 53-56.

1860-1863: AGE 53-56.

Return to Cambridge.--Removal of Collection to New Museum Building. --Distribution of Work.--Relations with his Students.--Breaking out of the War between North and South.--Interest of Agassiz in the Preservation of the Union.--Commencement of Museum Publications. --Reception of Third and Fourth Volumes of "Contributions."--Copley Medal.--General Correspondence.--Lecturing Tour in the West. --Circular Letter concerning Anthropological Collections.--Letter to Mr. Ticknor concerning Geographical Distribution of Fishes in Spain.