OEGAXIZATIOX OF THE U. S. NATIONAL MUSEUM 21 



2. The exliibition of duplicate material is to be avoided. 



3. Each object will be placed iu a case of the form best suited for its 

 effective display, and the light, color of the backgrouud, &c., will be so 

 adjusted as to show it to best possible advantage, and with the least 

 possible fatigue to the eyes of the visitor. 



4. Each object, or group of objects, will be accompanied by a large, 

 plainly printed label, which will give a concise description of what is 

 shown, an account of its origin and uses, a synopsis of its history, and 

 the name of the person or organization contributing it to the Museum. 



5. The objects will be grouped together in systematic order, and each 

 case will be provided with a general descriptive label. In the case of 

 collective exhibits, the general label may also give the name of the con- 

 tributor. 



C. The specimens will be illustrated and supplemented hy pictures, 

 diagrams, books, and mai)S, in such manner that the Museum will form 

 an encyclopedia, the illustrations for which are in the exhibition cases, 

 the text iu the labels. 



7. Guide-book manuals of the different departments will be published, 

 ■which will embody in concise and systematic form the information given 

 by tlie specimen labels, together with such illustrative material as may 

 seem necessary to present in addition. 



XXXVII. 



Use of material for investigation. — Persons not officers of the Museum 

 may obtain access to the collections for i)urposes of study by filing 

 an application, which must be indorsed by the Director. Such investi- 

 gations must be conducted in the Museum buildings, and the Curator 

 of each department is required to see that the materials are properly 

 used, without loss to the Museum. 



xxxyiii. 



Loans of material. — No collections will be sent out of the city for 

 study, except to oificers of other museums, and then only by special ar- 

 rangement. 



XXXIX. 



Announcement of proposed investigations. — It is strongly recommended 

 that officers of the Museum contemplating the prosecution of investiga- 

 tions upon special groups iu the departments under their charge file 

 statements of their intention, iu order to secure priority in the use of 

 material. 



XL. 



Property receipts. — The following form of ''receipt" from naturalists 

 who may borrow its material, has been adopted by the Institution: 



[Locality , date .] 



"Received from the Smithsonian Institution a collection of , 



