100 REPOKT OF NATIONAL MUSEUM, 1919. 



as well as such a quantity of fragments as to assure a full representa- 

 tive series of this most remarkable stone. One complete and two 

 nearly complete individuals of a chondritic stone which fell at 

 Eichardton, North Dakota, on June 30, 1918. were also acquired 

 through the aid of Prof. T. T. Quirke of the University of Minnesota. 



In addition to these, fine large exhibition slabs of the San An- 

 gelo, Texas, and Staunton, Virginia, meteoric irons, weighing 1,917 

 and 1,162 gleams respectively, were presented by Mr. C. S. Bement, 

 Philadelphia, Pennsylvania, whose like public-spirited acts have 

 been many times noted in previous reports. A slab weighing 1,393 

 grams, of the Kenton County, Kentucky, iron was received in ex- 

 change from Ward's Natural Science Establishment, and examples 

 of the Crumlin, Durala, and Nellore meteoric stones, and the Uwet 

 iron, in exchange from the British Museum, London. 



Mineralogy mid petrology. — A remarkably large and perfect 

 crystal of scheelite, 3| inches in maximum diameter, and weighing 

 529 grams (about 1^ pounds), was included in material secured by 

 Dr. J. Morgan Clements, of New York City, while traveling in 

 Korea in the interest of the Federal Trade Commission, and pre- 

 sented by him to the Museum. In form this crystal is a simple 

 tetragonal octahedron (double pyramid), all of the faces being 

 wholly or partly represented. It is probably one of the most per- 

 fect, if not the most perfect, crystals of its size known. Two crystals 

 of cassiterite are also included in this accession. 



Two arsenic minerals, realgar and arsenolite, from Hunan, China, 

 especially interesting on account of the locality, were presented by 

 Mr. Ralph W. Weymouth, New York City, through Mr. F. L. Hess; 

 large specimens of chlorite, one with included ankerite and one with 

 pyrite crystals, were acquired by purchase; and two rare minerals, 

 hodgkinsonite, from Franklin, New Jersey, and riversideite, from 

 Crestmore, California, were added by exchanges, the former re- 

 ceived from Mr. M. L. Jandorf, York, Pennsylvania, and the latter 

 from Mr. William F. Foshag, Berkeley, California. 



An example of the new mineral ferrierite, from British Columbia, 

 gift of Dr. W. F. Ferrier, Toronto, Canada ; a large exhibition speci- 

 men of jarosite from California, transferred by the United States 

 Geological Survey; several hundred pebbles of thomsonite and lin- 

 tonite from the north shore of Lake Superior, gift of Miss Mary W. 

 Peckham, Providence, Rhode Island; six minerals from Westfield, 

 Massachusetts, described and presented by Mr. Earl V. Shannon; 

 and a specimen of aguilarite from Mexico, a mineral before unrepre- 

 sented in our collections, presented by Prof. William E. Ford, Yale 

 University, are all worthy of note. 



