582 LOUIS AGASSIZ. 



TO MR. THOMAS G. CART. 



CAMBRIDGE, March 23, 1863. 



DEAR TOM, For many years past your 

 aid in fostering the plans of the Museum in 

 Cambridge has greatly facilitated the progress 

 of that establishment in everything relating to 

 the Natural History of California, and now 

 that it has become desirable to extend our 

 scheme to objects which have thus far been 

 neglected I make another appeal to you. 



Every day the history of mankind is brought 

 into more and more intimate connection with 

 the natural history of the animal creation, and 

 it is now indispensable that we should organize 

 an extensive collection to illustrate the natural 

 history of the uncivilized races. Your per- 

 sonal acquaintance with business friends in 

 almost every part of the globe has suggested 

 to me the propriety of addressing to you a 

 circular letter, setting forth the objects wanted, 

 and requesting of you the favor to commu- 

 nicate it as widely as possible among your 

 friends. 



To make the most instructive collections rel- 

 ative to the natural history of mankind, two 

 classes of specimens should be brought to- 

 gether, one concerning the habits and pursuits 



