430 



.VNXrAL ItKPOKTS OF DKP.MtT.M KNT OK AdltK ri/miK. 



Circulation statistics of the main library, by niontlis atid yeais,for the fiscal years 1911 



to 1920. 



Monlh. 



1910-11 1911-12 1912-13 1913-14 1914-15 1915-16 1916-17 1917-18 1918-19 1919-20 



July 



August 



September. 



October 



November . 

 December. . 



January 



Fet)riiary . . 

 March ...... 



April 



May 



June 



2,357 



2,381 

 2.259 

 3,118 

 3,0s:j 

 2,952 

 3.. 535 

 3,340 

 3,668 

 3,805 

 2. 589 

 3,163 



2,397 

 2,425 

 2,. 517 

 3,404 

 3.165 

 2,962 

 4,091 

 3,851 

 3,614 

 3,415 

 3.208 

 2,760 



2,472 

 2,269 

 2,584 

 3,048 

 3,152 

 3,051 

 4,106 

 3.403 

 3,415 

 3,394 

 3.148 

 2,891 



Year 36,250 38,112 j 36,633 



2,651 



2,083 

 2,531 

 3,301 

 3,232 

 3,226 

 4.454 

 3,618 

 4,021 

 3,623 

 2,951 

 3,188 



.38,879 



3,019 



2,567 

 2,793 

 3,903 

 3,352 

 3,570 

 4,260 

 3.638 

 3,9H0 

 3,514 

 3,072 

 3,285 



3,077 



3,285 

 3.334 

 4,183 

 4.439 

 4,140 

 4.888 

 4,715 

 5,028 

 4.052 

 4,1.36 

 3,637 



40,953 j 48,914 



2,9.32 



2,883 

 2.9.55 

 4,421 

 4,409 

 3,797 

 4,839 

 4,625 

 4,640 

 3.766 

 3,616 

 3,476 



3,113 



3,027 

 2,908 

 3,617 

 3,462 

 3, 137 

 4,099 

 3, 603 

 3,676 

 3,444 

 3,531 

 2,770 



2,860 

 2,616 

 2,232 

 2,474 

 2.684 

 2.728 

 3,. 572 

 3,8.30 

 3,920 

 3,608 

 3,327 

 2,606 



2,687 

 3,216 

 2,678 

 3,444 

 2,981 

 2,897 

 3,668 

 3,346 

 3,699 

 3,497 



3,iai 



3,085 



46,339 40,447 36,457 I 38,301 



The hioliost peak in the circulation of the main library, as shown in 

 the above table, was rea'hed in the fiscal year 1916. The circulatioii 

 last year is still only 79 per cent of what it was at that time. Thi;- 

 is due to the situation resulting from the loss of many of the de- 

 partment's scientific workers on account of the inability of the de- 

 partment to increase salaries ( ommensurately with the in'-reased 

 cost of living and the higher salaries paid outside of the Govern- 

 ment service. 



INTERLIBRARY LOANS. 



The num])er of books lent to libraries, institutions, and individuals 

 outside of the city was 799, an increase of 141 as compared with the 

 previous year. To the total number of })0()ks lent should be added 

 142 photostat copies and 17 typewritten copies of articles requested, 

 making the total use outside of the city 958. The statistics of the 

 last five years, arranged alphabetically by States, are as follows: 



