REPORT OP ASSISTANT SECRETARY. 57 



The entire number of packages received at the Institution during 

 1860, by express, railroad, and steamboat, amounted to exactly 1,000; 

 while 888 were transmitted in the same time ; making an aggregate 

 of 1,888. This number, of course, has no reference to the sub-pack- 

 ages or smaller parcels inclosed in larger ones, or in the boxes of 

 exchanges received from the agents of the Institution abroad. The 

 receipts of the same kind in 1859 were 804; the transmissions 845 ; an 

 aggregate of 1,649, showing an increase of 239, or about one seventh. 



A. 



Receipt of boohs, &c, by exchange in 1860. 



Volumes 



Octavo 781 



Quarto 419 



Folio 71 



1,271 



Parts of volumes and pamphlets : 



Octavo , 2,716 



Quarto 1,371 



Folio 93 



. 4,180 



Maps and charts 220 



Total 5,671 



Showing the very great increase over- the aggregate (3,602) of last 

 year, of 2,069 volumes and parts of volumes, or nearly as great an 

 amount as the receipts of 1858 and 1859 combined. The number of 

 separate donations was 1,635, to 1,252 of last year. 



As a matter of some interest I take the liberty of recapitulating the 

 receipts by exchange in the ten years, during which the system has 

 been in active operation : 



1851 878 volumes and parts of volumes. 



1852 



1853 



1854 



1855 



1856 



1857 



1858 



1859 



1860 



609 



do. 



2,556 



do. 



2,828 



do. 



2,770 



do. 



3,330 



do. 



1,760 



do. 



2,540 



do. 



3,602 



d#. 



5,671 



do. 



Total 26,544 do. 



