204 Field Museum of Natural History — Reports, Vol. X 



ment albums. Most of the data concerning these photographs have 

 never been recorded, and exist only in the memory of the staff. 

 Each photograph may be used to illustrate a number of geological 

 subjects. A laborious search of the albums to find a suitable illustra- 

 tion for some subject is often necessary. The catalogue begun 

 this year, now nearly finished, contains this hitherto unrecorded 

 data and is thoroughly cross-indexed for geological subjects. In 

 some cases as many as five cards have been written for a single print 

 and most of the prints are represented by at least two cards, one 

 geographical and one or more geological. The standard Dewey 

 decimal classification was used and found satisfactory. A quick 

 reference to the card index shows at once what photographs are 

 available from any country and what illustrations there may be of 

 any geological feature such as jointing or lava flows. 



A catalogue of all exhibited invertebrate fossils and plants has 

 been completed and is in use. The cards give the Museum number 

 of each specimen, with its name, horizon, and geographical location. 

 They are grouped by geological periods and under each period the 

 cards are filed alphabetically by genera. This catalogue contains 

 5,378 cards. A similar catalogue for the reserve fossil specimens 

 has been started and some 700 cards written. 



A catalogue of approximately two-thirds of the specimens of 

 vertebrate fossils, which was already in existence, was enlarged by 

 the addition of forty-nine cards. This catalogue is on larger cards 

 than the other catalogues, and is much more detailed. It contains 

 the entire history of each specimen and such other information as 

 may be considered pertinent. 



The steady growth of the library of pamphlets and separates on 

 the subject of vertebrate paleontology made it necessary to provide 

 better means of preserving and using this literature. Accordingly 

 2,100 pamphlets and unbound volumes were filed in 133 covers made 

 in the Department and arranged and marked alphabetically by 

 authors. A catalogue of 1,641 cards was made for this library. 

 A similar catalogue of cards was prepared for the literature on 

 invertebrate paleontology, and a special catalogue for a special 

 bibliography of paleontology and geology of Baffinland. All cata- 

 logue cards except those of vertebrate paleontology specimens are 

 on standard library size cards. To accommodate them five small 

 filing cabinets to fit in spaces in the Department bookcases were 

 made in the Department workrooms. These cabinets are twenty- 

 two inches long, fourteen inches high and twelve inches deep. Each 



