262 REPORT OF NATIONAL MUSEUM, 1891. 



been devoted either to imicliasinj;- or collect in j^-, and wc liad to rely on 

 donations and exchanges. Of tliose who have exerted themselves to 

 obtain for us material, and to whom especial thanks are due, Mr. J. H. 

 Hnntington, of Hyde Park, Mass., and Mr. F. W. Crosby, of this city, 

 should be mentioned. Mr. J. P. Iddings, while in Italy, kindly arranged 

 for lis an exchange of materials with Dr. IT. H. Johnston-Lavis. 

 The principal accessions are given in the subjoined list: 



A collection of some 98 eruptive luetiuuorpliic rocks aud volciiuic products from 

 various Europeau sources, received in cxcliauiic for otlicr materiiils froui J)r. JI. II. 

 Joliuston-Lavis, of Naples, Italy. 



Some 45 specimens European volcanic rocks received in cxcliange fnmi Mr. W. H. 

 Hobbs. 



Some 117 specimens of general geologicM) mntcrials received in exchange from B. 

 Sturtz, Bonn, Prussia. 



A collection comprising phospliates, aud gold and platinum ores Irom Colombia, 

 South America, and Grand Connetabl(^, French Guiana. Gift of Mr. Charles Bull- 

 man, of Plainlield, N. J. 



A fine series of Black Hill tin ores, the gift of Titus Ulke, jr. 



Ten samples of manganese ores from Crinu)ra, Va., the gift of William Carnegie. 



A small series of natural hydrocarbons from Utah, the gift of G. C. Hewett. 



A beautiful volcanic bomb from the islands of Lipari, sliowiugtheso-called bread- 

 crust structure. Gift of Mr. J. P. Iddings. 



A small series of phosphates from the Navassa Islands. Gift of Mr. E. V. DTn- 

 villiers. 



A small series of eru])tive and stratitied rocks from the I)e Beers diaiuond mine. 

 South Ai'rica. 



A tine large series of phosphates froiu Dunelhm, Fla. (!ift of Dr. C. N. Shep- 

 pard, jr. 



A collection of ores aud building stones from New Mexico. Gift of Prof. J. H. 

 Huntington. 



Samplesof infusorial earth from South Beddingtou, Me. Giftof Mr. C. E.Mitchell. 



A large study series of ores ami rocks illustrating the quicksilver dejiosits of the 

 Pacific slope as described by G. F, Becker and colleagues. Received froui the U. S. 

 Geological Survey. 



A series comprising nearly 200 eru])tive and other rocks from Michigan. Received 

 from Dr. M. E. Wadsworth, State geologist. 



Samples of nickel ore from the Algoma aud Sudbury disiricts, Canada, given, re- 

 spectively, by R. P. Travers, Commander William H. Fogler, .•ind Prof. W. O. Crosby. 



A seiies of sample lead ores and fluorite from Rosiclare, 111. Gift of Dr. R. P.Mulliu. 



A fine sample of tblded gneiss. Gift of S. Ward Loper. 



Sami)lcs of gold and silver or(% aud building stone, Irom near Deadwood, S. Dak. 

 Gift of Mr. Theo. Kuntzen. 



One hiuidred and eleven photographs from the scries of negatives in possession 

 of the Geological Society of America, aud illustrative of the various geological 

 phenomena. Gift of the U. S. Geological Survey. 



A fine large lot of onyx marble from the newly discovered de])Osit near Prescott, 

 Yavapai County, Ariz. Gift of Mr. W^illiam O. O'Neil. 



A large series of ores and economic minerals from Texas, Mexico, New Mexico, 

 California, and other States, collected for the Museum by Mr. F. W. Crosby of this 

 city. This collection has not as yet been entered upon the Museum catalogue, but 

 should be mentioned here as it is one of the nu)st important thus far received. 

 Mr. Crosby is especially entitled to our thanks, inasmuch as the collecting is entirely 

 voluntary upon his part, the Museuni paying only the bare cost of boxing aud trans- 

 shipment. 



