60 



EEPOKT OF THE SECRETAEY. 



Scientific and miscellaneous exchanges, 49 per cent: 



Sent abroad 34, 278 



Received from abroad ^ 27, 357 



61,635 



Total 125,796 



It is not i)OSsil)le to give the actual weights of each class of exchanges, but it is 

 estimated that in the aggregate the publications sent and received for the various 



Exchanges shipped abroad _______ 



Exchanges received from abroad ^ 



Fig. 2.— Chart representing llic increase of exchange transmissions abroad from 1850 to 1902, and also 

 of those received from abroad for distril)Ution in tlie United States during tlie same period. 



Government establishments weighc<l about (ifi jtcr cent of thetotid of all transmissions 

 for the year, or about 258,000 pounds. 



By comparison, the receipts from abroad are far from being a satisfactory ctjuiva- 

 lent f)f those sent, esj)(H"ially Avith regard to governmental exchanges. This mequal- 

 ity is gradually being adjusted by some countries, and it is hoped that in the not 

 distant future the cxchaiiues fn^u aliroad mav be consideral)lv increased. \\\ this 



