REPORT ON THE DEPARTMENT OF LITHOLOGY AND PHYSICAL GEOL- 

 OGY IN THE U. S. NATIONAL MUSEUM FOR THE YEAR ENDING JUNE 

 30, 1886. 



By George P. Merrill, Curator. 



The additions to the collections during the year covered by this report 

 have been nearly all in the form of small accessions from a great variety 

 of sources, and but few of them were of sufficient importance to merit 

 special mention. As heretofore, the department has had to rely for its 

 material mainly on exchanges and donations, and while much of the 

 matter thus obtained is valuable, it is for the most part of a very mis- 

 cellaneous character. 



The more important of the accessions are given in the following list: 



Abbott, A. N. A series of fulgurite tubes from Uuiou Grove, 111. 



American Institute of Mining Engineers. Ninety-five samples native and foreign 

 building stone. 



Bemadou, Ensign J. B. One slab Verdantique marble, one stone pencil jar, one disk 

 of yellow stone, and one box of indurated talc. (?) Corea. 



Biddlc, Henry J. A collection of serpentines and associated rocks from Chester County, 

 Pa. 



Bouvc, T. T. Specimens eruptive rocks from Hiugham, Mass. 



Charpy, M. L. (Museum of Annecy, Haute Savoy, France). A collection of 154 rocks 

 from France, Italy, Belgium, and Hungary. 



Crittenden, A. B. Travertine. Rock of Gibraltar. 



Crosby, Prof. TV. 0. Collection of rocks and minerals, various sources. 



Diller, J. S. Six sj)ecimens eruptive rocks from Kentucky and California. Also pho- 

 tograph of a cliff of banded hypersthone audesite. California. 



Dagger ; S. M. One specimeu flexible sandstone, Banner's Elk, Watauga, County, 

 N. C. 



Emerson, Prof. B. K. A collection of some 50 specimens Massachusetts rocks and 

 small slabs of Suisiu City (California) "Marble." 



Eritsch, E. Six samples Algerian marbles. 



Georgia Marble Company. Twelve cubes, G thin slabs, and 1 small column of marble 

 from Pickens County, Ga. 



Gurney, H. D. One largo block red granite from Watab, Minn. 



Hill. B. T. Volcanic dust from near Wray Station, Colo. 



Hitchcock, Prof. C. H. A collection of over 100 specimens rocks from New Hamp- 

 shire, and a vertical column showing the proportional thickness of the Arclueau, 

 Cambrian, and Silurian rocks in New Hampshire. 



Horan, Henry. Slab of stalagmite marble from the Luray Caves, Virginia. 



Lamb, T. F. Elajolifce Syenite from Litchfield, Me. 



Mcllhenney, Dr. TV. S. Two specimens soapstone from the District of Columbia 



239 



