THE LIBRAKY. 



661 



In order to facilitate the work in connection with the lending of 

 our books to other libraries, it was deemed advisable during the past 

 year to formulate some definite rules for interlibrary loans. The 

 rules are printed as Appendix 4 to this report. They have been 

 found helpful in systematizing the work. 



No separate record of the loans to other departments and libraries 

 in the city have been kept, but it is certain that the use of our collec- 

 tions by other Government offices has increased considerably in 

 recent years. 



ACCESSIONS. 



The number of books, pamphlets, and maps added to the Library 

 during the past year compared with the accessions of the previous 

 year is as follows: 



Accessions. 



Fiscal year 

 1910. 



Fiscal year 

 1911. 



Purchases: 



Volumes 



Pamphlets 



Maps 



Serials aud continuations , 



Gifts: 



Volumes , 



Pamphlets 



Maps 



Continuations 



Volumes made by binding periodicals and serials 



1,454 



65 



8 



1,574 



8,156 



2,030 



89 



1 



736 



8,816 



From the above tables it will be seen that the accessions of the past 

 year, namely, 8,816, all of which were catalogued, exceeded those of 

 the previous year by 6G0. The total recorded number of books, 

 pamphlets, and maps in the Library on July 1, 1911, was 115,653. 

 In addition, the Library had on hand on July 1, 1911, unaccessioned, 

 uncatalogued, and unclassified material as follows: Volumes, 441; 

 pamphlets, 950; continuations, 572; maps, 18; total, 1,984. 



As is shown from the above tables, more than half of the accessions 

 of the last year were gifts, the number exceeding that of the previous 

 year by 945. It is regretted that space does not permit us to give a 

 complete list of the donors. Special mention should, however, be 

 made of the most notable gift of the year, namely, a set of the Annals 

 of the Royal Botanic Garden, Calcutta, which is probably the cost- 

 liest and most beautiful publication issued by any botanical institu- 

 tion. The Eoyal Botanic Garden presented the set to the liibrary 

 in exchange for publications of the department. 



Continued progress was made during the year in completing im- 

 perfect files of periodicals. Among the more important sets com- 

 pleted were the- following: 



Annales cle clilmie et cle physique. 



•Arcbiv fiir entwicklungsmecbanik der orsanismen. 



Archlv fi-r experimentelle pathologie und pharmakologie. 



