104 KEPORT OF NATIONAL MUSEUM, 1891. 



The space now occupied by exhibition cases is 8, 183 



Pueblo models 1, 584 



Twenty-one window spaces tilled with radiators and ( Vntral American sculp- 

 ture 378 



10, 145 

 Center space tilled with statues, models, etc 1, 150 



Total used for exhibition U, 295 



Aisles 1, 582 



Entrance 794 2,376 



13, 671 



KEVIKW OF SPECIAL RKSEAKCHES PROSECUTED UPON MATERIAL 

 BELONGINC TO THE DEPARTMENT. 



In the matter of special researches belonging to the department, the 

 year commenced with flue promise, l)nt was interrupted by the work 

 of classification and rearrangement before referred to. However, some- 

 thing not entirely insigniticaut was done under this head, and the 

 work of classification and rearrangement was an assistance and aid in 

 some regard in this direction. The classification of copper implement*^ 

 incident to the Perkins collection led to special researches in that re- 

 gard, which are not con(duded. The research into these copper imple- 

 ments developed the possible fact that while Wisconsin and Micliigan 

 are the richest States in copper implements, and contain the most cele- 

 brated copper mines in the eastern United States supposed to have 

 been wrought in prehistoric times, yet this collection shows that of 

 these two States the portions most distant from the cojiper mines, to 

 the south and east, yielded tlie greatest number of copijer objects; 

 and also that the implements are materially different in style and 

 mode of construction and workmanship from those in other states. 

 They also give color to the claim, easily made and strongly disputed 

 heretofore, that the Indians of that time knew the art of melting, mold- 

 ing, and casting. 



Special rcisearches have been made upon the Jade question, as it is 

 presented by my prehistoric work. This is one of the most interesting 

 questions arising in this science. It has been much discussed in Europe, 

 Asia, and America, and considerable progress has been made in the ac- 

 quirement of knowledge concerning it. But there still exists among 

 the people, even those well informed, much misunderstanding and igno- 

 rance upon this question. 



The researches upon the subject of arrow or spear-heads or knives, 

 has been described under the head of new classification. It was prac- 

 tically a work of invention and had to be gone over and corrected step 

 by step. 



The making of the synoptical case was also a labor of special research 

 which I hope was neither impracticable nor unprofitable, but which, 



