CONTENTS OF VOL. L xi 



— Renewed Correspondence with Prince Canine 

 about Journey to the United States. — Change of 

 Plan owing to the Interest of the King of Prussia in 

 the Expedition. — Correspondence between Profes- 

 sor Sedgwick and Agassiz on Devolopment Theory. 



— Final Scientific Work in Neuchatel and Paris. — 

 Publication of " Systfeme Glaciaire." — Short Stay in 

 England. — Farewell Letter from Humboldt. — Sails 



for United States 366 



