IlEPORT ON THE DEPARTMENT OF LITHOLOGY AND PHYSICAL GEOL- 

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

 ;)0, 188G. 



By George P. Merrill, Curator. 



The additions to the collections during the year covered by this re[)ort 

 liave 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 exchauges 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: 



AbhoU, A. N. A scries of fulgurite tubes from Uuioii Grove, 111. 



American Institute of Minivg EiKjinccrs. Ninetj'-fivo siuuples luilive and foreign 



liuildiDg stone. 

 Bcniadou, Ensign J. li. One slab Verdiintic^ue niarl)le, one stone jicTieil jar, one disk 



of yellow stone, and one l)ox of indurated tale. (?) Coreai. 

 Biddle, Henri/ J. A collection of serpentines and associated rocks from Chester County, 



Pa. 

 liouvc, T. T. Specimens ernptis'e rocks from llingliam, Mass. 

 Charpij, M. L. (Museum of Annecy, llauto Savoy, France). A colled ion of ir)4 rocks 



from France, Italy, Belgium, and Hungary. 

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



Crosby, Prof. W. O. Collection of rocks and minerals, various sources. 

 Dillcr, ./. S. Six specimens eruptive rocks from Kentucky and California. Also }>ho- 



tograph of a cliff of banded Iiypersthene andcsite. California. 

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



N. C. 

 Kmerson, I'rof. 1>. K. A collection of some 50 specimens Massachusetts rocks and 



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

 Fritsch, E. Six samples Algerian marbles. 

 Georgia Marble Company. Twelve cubes, (> thin slabs, and 1 small eolunin of marble 



from Pickens County, Ga. 

 Gurneij, II. I). One largo block red granite from Watab, Minn. 

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

 mtchcock, Prof. C. R. A collection of over 100 specimens rocks from New ll;inip- 



shire, and a vertical column showing the proportion;il thickness of (lie Archa'an, 



Cambrian, and Silurian rocks in New Hampshire. 

 Horan, Henri/. Slab of stalagmite marble from the Liiniy Caves, Viiginia. 

 Lamb, T.F. Ehoolite Syenite from Litchficlil, Me. 



Mclllienneij, Dr. W. S. Two spcjcimons soai)Ht()Tie from tJie District of Colinubia 



2-3U 



