Oct. 1901. Annual Report of the Director. 23 



that the use of a sloping shelf and a beveled block gives the speci- 

 mens an improved perspective, which could not be gained by a level 

 shelf. The lower portion of the case has a projecting slant front 

 supported by turned posts and is designed for the exhibition of 

 larger specimens. The flat and upright cases are designed for the 

 exhibition of the heaviest and largest ore specimens. The flat cases 

 are six feet long, four feet wide and four feet high : the upright cases 

 four feet square and six feet six inches high. They rest on heavy 

 turned legs, which raise the base of the case two feet from the floor. 

 The cases are lined with Pompeian red burlap. An upright hexagonal 

 case with central pyramid is used for the exhibition of the most 

 showy specimens of copper ore. The collections illustrating the 

 metallurgy of iron, formerly occupying Hall 76, have been entirely 

 removed, as they were somewhat foreign to the present scope 

 of the Museum and the room was needed for other purposes. Col- 

 lections and cases were presented to the Armour Institute of this 

 city. In their place will be put the collections illustrating geo- 

 graphic geology, which include relief maps, globes and other geo- 

 graphic material, and the space in Halls 60 and 61, formerly devoted! 

 to their exhibition, will be used to accommodate the expanding: 

 paleontological collections. Considerable additions have beeru 

 made to the collections of ores of the precious metals, largely 

 through material received from the Paris Exposition. The exhibi- 

 tion of this material has been provided for by the addition of one 

 new wall case and by the installation of four cases of ores in the 

 west dome. The interiors of the upright floor cases in Hall 72 

 have been repainted, the specimens cleaned, re-identified and mounted 

 on beveled imitation mahogany blocks. 



Photography, Illustration and Printing. — Each of these divisions 

 reports unusual progress, both as regards equipment and work 

 accomplished. The addition of more floor space to the printing 

 office has made it possible to increase the staff, which was recently 

 done. The employment of an artist in the division of illustration 

 must be noted with satisfaction, being an acquisition which had been 

 much needed. The following tables show the work performed by 

 these important divisions : 



