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departments of Natural History established hereafter, together 
with such collections as, even with the most rigorous sifting, 
each will accumulate. The natural growth of comparative 
anatomy, ethnology, and archeology, and of the geological, 
geographical, and other biological departments, which will 
naturally centre in the Natural History square of the Univer- 
sity, will tax its capacity to the utmost, if they have in the 
future a growth at all commensurate with that of these depart- 
ments up to the present time. 
ALEXANDER AGASSIZ. 
CAMBRIDGE, October 1, 1884. 
