10 REPORT OF NATIONAL MUSEUM, 1905. 



and Argentina. The curator of birds, as the result of a trip to Costa 

 Rica, brought back with him over 1,800 choice specimens — a notable 

 addition to his division. From the U. S. Bureau of Fisheries were 

 transmitted large quantities of fishes and marine invertebrates, in- 

 eluding many types and many undescribed forms, obtained during 

 recent explorations, and from the U. S. Geological Survey a large 

 number of rock specimens, minerals, and fossils. 



Over 'is, ()()() duplicate specimens were used in making exchanges 

 and in the distributions to educational establishments, and above 

 14,000 specimens were lent to specialists for study. 



Some changes were rendered possible in the exhibition halls by 

 replacing certain of the older collections with recent accessions, 

 especially on i lie subject of the ethnology of Malaysia and the Philip- 

 pines. Two noteworthy additions were the cast of a sulphur-bottom 

 whale, about SO feet long, which has been suspended from the roof of 

 the south hall, ami a skeleton of the immense fossil Dinosauri an rep- 

 tile, Tricerato'ps prorsus, installed in the southwest court. 



