242 iiEl'OKT ON NATIONAL MUSEUM, 188G. 



sparo<l lia.s been <levoted to papers of coiusideiable leiij^tb, and wiiicU 

 are as yet incomplete, euts clown llie possible list to two titles, ;is given 

 in the bibliography.* 



Tlie collections are liot as yet snflicieutly systematized to aflbrd good 

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

 have frequently been consulte<l for purpose of comparison, notbing, 

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

 awaie. 



The present state of the collection is as follows: 



Whole uumber of rock specimoua in the reserve series 17,G47 



Whole nninber of rock specimens iu the duplicuto series 3, OUO 



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 eeliieatioual 

 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 somew hat by the with- 

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

 series. They may be summarized as follows: 



Spetimcus. 

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



Nova Scotia 854 



From Victoria, Australia 355 



From the United States Geological Snrveys \vcst of the 100th meridian 5G8. 



From the United States Geological exploration of the 40th parallel 2, G40 



From Leadvill(% Colorado, S. F. Emmons, United States Geological Survey. 588 

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



United States Geological Survey 198 



From St. Gothard Tunnel 80 



Rocks of New Ifanipshiie 250 



Miscellaneous, classified by kinds 2, 527 



Other miseellanoous 4, 143 



Total 12.2tl3 



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

 tematic series, there are now on exhibition thefollowin^i; objects of interest 

 which were in part noted in my report for 1881 : One sl(»i)e table case of 

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

 Lake Lahontan, Nevada; one slope table caseof siliceous and calcareous 

 sinters from the Yellowstone National Park; one door screen case of 

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

 case devoted to collections illustrating the geology of rx'rmi.da; this col- 

 lection is not yet complete. Tiiere arc also sundry interesting specimens 



* See Part IV. 



