TWELFTH ANNUAL REPORT §9 



in the Siboga Expedition, and covered nothing not already in 

 the library or ordered. I desire to order all available printed 

 cards for publications in series and the cards, printed by the 

 Royal Library at Berlin, for inaugural dissertations as soon as 

 funds are available. It is probable, that by securing cards from 

 various sources a large proportion of all our serials may be 

 analyzed in the near future. 



IJyiion catalogue. — The largest single piece of work accom- 

 plished during the year is the completion of the filing of the 

 union catalogue, consisting of one copy of the author card 

 for each title. This catalogue consists of Library of Congress 

 printed cards. Library of Congress proof, cards printed by the 

 John Crerar library during one year, and those printed by the 

 American Library Association for two series. This catalogue 

 now occupies 196 card cabinet and sorting trays, and contains 

 approximately 325,000 cards. 



Photographs. — To give more adequate protection against fire, 

 the collection of photographic negatives, now amounting to 

 16,200 five by seven, and 1,250 eight by ten, negatives, has been 

 moved into the library and placed in an accessible place on the 

 second floor. 



Cuts. — The Bureau of Science collection of cuts, numbering 

 approximately 3,800, has been carefully identified by comparison 

 with the prints and numbered with steel dies in such a way 

 that this record cannot be lost. Copies of the prints have been 

 pasted into an album, each print receiving the same number as 

 the cut, and, in the case of The Philippine Journal of Science, 

 the number has been placed on the margin of the print in the 

 bound set reserved for use in the library. They are now avail- 

 able when needed, although the work is not completed. 



Reserve stock of The Philippine Journal of Science. — To 

 protect against loss by fire, 36 complete sets of The Philippine 

 Journal of Science have been placed in the library as a reserve 

 stock. 



Duplicates. — A large number of duplicates, many of which 

 may be used to good advantage as exchange material, still 

 remains on the shelves. ''Want lists" and "duplicate lists" 

 received are always examined carefully, and all duplicate ma- 

 terial on hand and not needed is forwarded whenever there is 

 opportunity. By this method, we have frequently filled in our 

 own sets, receiving numbers lacking from our files in return 

 for duplicates sent. 



Exchanges and gifts. — A number of exchanges for the publica- 

 tions of the Bureau have been arranged, adding several valuable 



