[ 13 ] 
Presents. 
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Donors. 
The Editor. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
The Observatory. 
The Ministry of the Interior 
of the Netherlands. 
The Author. 
The Author. 
The Author. 
C. Darwin, Esq., E.E.S. 
The Author. 
The Author. 
The Authors. 
The Observatory. 
