406 REPORT OF NATIONAL MUSEUM, 1889. 



NOTES ON THE MORE IMPORTANT ACCESSIONS. 



The more important accessions of the year are included in the fol- 

 lowing list: 



( 1) A large polished block (22 by 21 by 15 inches) of serpen Hi nous lime- 

 stone (ophiolite or ophicalcite) from Thurman, Warren County, N. Y. 

 Gift of R. T. Baxter, of Glens Falls. The specimen is of value not only 

 on account of its beauty as an ornamental stone, but also as showing 

 the various stages of alteration from pyroxene into serpentine. This 

 stone has been the subject of a special investigation by the Curator. 

 (See bibliography.) 



(2) Two samples of Algerian marble, showing fracturing and fault- 

 ing. Gift of 15. Fritsch, 515 and 517 West Twentieth Street, New York 

 City. 



(3) A collection comprising some one hundred and eighty specimens 

 modern and antique marbles from European and African localities, 

 received in exchange from tbe Museum of Natural History in Paris. 



(4) An interesting and valuable series of metamorphic and eruptive 

 rocks of Brazil (2G9 specimens), received in exchange for other ma- 

 terials from Prof. O. A. Derby, of Rio de Janiero. 



(5) A series of serpentines and associated rocks from various locali- 

 ties in New York State, received from G. F. Kunz. 



(G) A series of peridotites and serpentines from Clickertor and the 

 Cadgwith district, England, in exchange from Mr. R. N. Worth, of 

 Plymouth, England. 



(7) A series of rocks and general geological material, including spher- 

 ulitic felsite, serpentine, geodes, graphite, fossil footprints, infusorial 

 earth, etc., from various localities, received from Prof. W. O. Crosby, 

 of the Boston Society of Natural History, in exchange for other ma- 

 terials. 



(8) A. polished slab (12 by 14 inches) of green marble from Loudoun 

 County, Virginia. Gift of Mr. G. W. Carter, Washington, D. C. 



(9) A series of ninety-two specimens European eruptive rocks, re- 

 ceived in exchange for other material from B. Stnrtz, of Bonn, Prussia 



(10) Some forty specimens of siliceous sinters and eruptive rocks from 

 New Zealand, received in exchange from Prof. T. F. Cheeseman, of 

 the Auckland Museum. 



(11) Some sixty-five eruptive and metamorphic rocks from Norway, 

 Sweden, and Scotland, received in exchauge for other material from 

 Dr. G. H. Williams, of Johns Hopkins University, Baltimore, Mary- 

 land. 



(12) A series comprising one hundred and seventeen dressed 4-inch 

 cubes of building and ornamental stones of Austria, received in ex- 

 change from Dr. A. Brezina, of the Imperial Museum in Vienna. 



(13) Twelve characteristic specimens lavas from the Hawaiian volca- 

 noes. Gift of Mr. E. D. Preston, of the U. S. Coast Survey. 



