242 KEPOKT ON NATIONAL MUSEUM, 1886 



spared has been devoted to papers of considerable length, and which 

 are as yet incomplete, cuts down the possible list to two titles, as given 

 in the bibliography.* 



The collections are not as yet sufficiently systematized to afford good 

 facilities for study to other than Museum officials, and, although they 

 have frequently been consulted for purpose of comparison, nothing, 

 other than above, has been published regarding them so far as I am 

 aware. 



The present state of the collection is as follows: 



Whole number of rook specimens in the reserve series 17, G47 



Whole number of rock specimens in the duplicate series 3, 000 



Total 20,647 



Of the reserve series 5,313 are now on exhibition ; of these 2,730 are 

 building and ornamental stones, and 1,829 belong to the edueational 

 series of rocks and rock-forming minerals. The remainder are miscella- 

 neous materials, not yet in their proper places in the series of which 

 they are to form a part. There are also now in the collection some 3,400 

 thin sections of rocks for microscopic study. 



The rocks of the reserve series not designated or as yet not utilized 

 for exhibition, but which are stored in the drawers of table cases, num- 

 ber some 12,203. This number may be reduced somewhat by the with- 

 drawal, from time to time, of materials to make up the exhibition 

 series. They may be summarized as follows: 



Specimens. 

 From the various geological horizons of Canada, New Brunswick, and 



Nova Scotia 854 



From Victoria, Australia - 355 



From the United States Geological Surveys west of the 100th meridian 508 



From the United States Geological exploration of the 40th parallel 2,040 



From Leadville, Colorado, S. F. Emmons, United States Geological Survey. 568 

 From the Comstock Ledge and Washoe districts, Nevada, G. F. Becker, 



United States Geological Survey 198 



From St. Gothard Tunnel 80 



Rocks of New Hampshire 250 



Miscellaneous, classified by kinds 2, 527 



Other miscellaneous 4, 143 



Total 12.S03 



Aside from the rocks mentioned above as forming a part of the sys- 

 tematic series, there are now on exhibition thefollowing objects of interest 

 which were in part noted in my report for 1884: One slope table case of 

 lavas from Ice Spring Buttes, Utah; one slope table case of tufas from 

 Lake Lahontan, Nevada; one slope table case of siliceous and calcareous 

 sinters from the Yellowstone National Park; one dcor-screen case of 

 concretions; one pier case of stalagmites and stalactiies, and one pier 

 case devoted to collections illustrating the geology of Bermuda; this col- 

 lection is not yet complete. There are also sundry interesting specimens 



* See Part I v. 





