310 



ANKUAL REPORTS OF DEPARTMENT OF AGRICULTtTRE. 



various offices, the statistics of circulation given in the following 

 tables do not give an adequate idea of the real use of the Library. 

 The total number of books charged to individuals, namely, 52,997, 

 added to the total circulation of current periodicals, 116,936, making 

 a grand total of 169,933, represents simply the recorded use of the 

 Library. The remaining charges represent merely the record of the 

 books shifted from one branch of the Library to another, either for 

 filing or to fill the request of some reader. In the latter case, the 

 record of its use is given in the charges to indi\dduals. The record 

 of the charges from the bureaus to the main Library shows that it 

 was necessary for the main Library to recall 2,529 books from various 

 bureau collections for the use of the bureaus. 



STATISTICS OF CIRCULATION. 



Books and periodicals charged by the main Library and the bureau, division and 

 office libraries during the fiscal years 1916 and 1917. 



Number of laooks charged. 



To individ- 

 uals. 



1916 1917 



To main 

 Library. 



1916 1917 



To branch 

 libraries. 



1916 



1917 



Total. 



1916 



1917 



Number of 



periodicals 



charged. 



1916 



1917 



Main Library i 



Bureau of Animal Industry:^ 

 Animal Husbandry Di- 

 vision 



Dairy Division 



Biochemic, Pathological, 

 Zoological, and other di- 

 visions 



Bureau of Chemistry 



Bureau of Entomology 



Forest Service 



Bureau of Plant Industry.. . 

 Office of Farm Management. 

 Office of Markets and Rural 



Organization 



Office of Public Roads and 

 Rural Engineering 



14,996 



1,909 



9, 7r)i 



4,680 



3, 550 



14, 930 



3,462 



(*} 

 2,863 



16, 192 



(5) 

 1,975 



(2) 



9,627 

 3,105 

 3,495 

 6 11,684 

 3,922 



{*) 

 2,997 



56 



(<) 



765 



446 



369 



979 



48 



(*) 

 689 

 522 

 422 

 6 666 



33, 918 



38 



C) 

 17 

 104 



180 



30, 147 



(<) 

 17 



(<) 



14 



131 



2 



6 34 



48,914 



46,339 



178 



(<) 

 182 



12 



12 



2,003 



(«) 



10, 533 



5,230 



3,919 



16, 099 



3,462 



(0 



3,053 



2,040 



(«) 



10, 330 



4,550 



4,094 



6 12, 521 



3,922 



(*) 

 3,181 



12, 820 



I 



56, 141 



62, 997 



2,793 



2,529 



34, 269 



30, 357 



93, 213 



86,977 



19,409 



19, 244 



1, 292 



4,548 



43, 275 



7,802 



19, 495 



(*) 



3,660 

 10, 176 



11,096 



15, 246 



905 



4,809 

 38, 398 



7,793 



20,987 

 4,566 



127, 885 



116,936 



1 Statistics include circulation in all bureaus and offices not mentioned below. 



2 No bureau library is maintained. The statistics of circulation of books are included in those of the 

 main Library. 



3 Circulation statistics included in statistics of main Library. 

 * No records kept. 



6 Statistics for only 10 months. 



The following table indicates the growth in the work of the circu- 

 lation division of the main Library during the past five years: 



Statistics of circulation (main Library), fiscal years 1913 to 1917. 



1913 1914 1915 



Largest number of books charged on any day 203 



Smallest number of books charged on any day 31 



Average number of books charged daily 121 



Largest number of books charged in any month 4, 106 



Smallest number oi books charged in any month I 2, 269 



Average number of books charged monthly [ 3, 078 



Total number of books charged during the year ^36, 933 



214 



39 



126 



4,454 



2,083 



3,239 



38,879 



268 



37 



134 



4,260 



2,567 



3,412 



40,953 



1916 



248 



57 



160 



5,028 



3,077 



4,076 



48, 914 



1917 



317 



32 



151 



4,839 



2,883 



3,861 



46,339 



