LIBKAKY. 



431 



The number of books borrowed from other libraries in the city was 

 4,121. a decrease of 905 as compared witli the previous year. Of 

 the 4,121 books borrowed durino; the year, 3,385 were borrowed from 

 the Lil)rary of Congress, 476 from the wSurj^eon General's Office, 75 

 from the National Museum and Smithsonian Institution, 73 from 

 the G(H)logical Survey, and the remaining 112 from 11 other Govern- 

 ment libraries. 



The number of books borrowed from libraries outside of the city 

 was 39, being 31 less than the number borrowed the previous year. 

 Of this number 9 were })orrowed from the Lloyd Library, Cincinnati. 

 6 from the Arnold Arboretum, Jamaica Plain, 4 from the Museum of 

 Comparative Zoology. Cambridge, and the remaining 20 from 13 

 other li)>raries. 



A summary of the statistics regarding books borrowed from 

 libraries in and out of Washington during the last five years is given 

 in the following table. Special thanks are due to these libraries for 

 the courtesies they have extended to the Department in the loan of 

 their books. 



Summarized statement of books borrowed from other libraries during the fiscal years 1916 



to 1920. 



CATALOGUE AND ORDER DIVISION. 



Mis3 Helen M. Thompson, Chief. 



The total number of catalogued books, ]>am])hlets, and ma])s 

 added to the library during the year was 9,593, an increase of 3,548, 

 as compared with the catalogued a'-cessions of the previous year. 

 This in'-rease was largely due to the fact that a large number of books 

 whi^h were ordered })revious to the war were received during the 

 year and also to the fa't that more exchanges were received. More 

 detaihul statistics of the accessions of the year as compared ^\\i\\ the 

 previous year are given in the following table: 



