98 REPORT OF NATIONAL MUSEUM, 1904. 



•Jr. A series of 22 specimens of copper and its associations from 

 Calumet, Michigan. 



5. A large slab of polished rose quartz, some 33 by 39 by 5 inches, 

 frojm the Black Hills of South Dakota. 



6. A beautiful nugget of native silver; gift of Mr. A. L. Pellegrin, 

 Nogales. Arizona. 



7. A sample of diamond-bearing gravel with small diamond attached 

 from Minas Geraes, Brazil; gift of Prof. O. A. Derby. 



In addition, mention should be made of a fine series of opalized 

 wood from near Logan, Montana, and a unique series of silicified gey- 

 ser tubes from southwestern Wyoming (both collected for the Louisi- 

 ana Purchase Exposition by the Head Curator); some large slabs of 

 the peculiar porphyritic rock known as leopardite from near Salisbury, 

 North Carolina, and of orbicular diorite from near Advance, in the 

 same State; also of the various quadrangle series, comprising some 

 385 specimens, received from the U. S. Geological Survey. 



DIVISION OP MINERALOGY. 



1. The largest accession of the year comprised some 600 specimens 

 illustrating the occurrence and association of zeolites and other sili- 

 cates in the trap rocks of New Jersey. The collection is remarkably 

 complete and valuable for both study and exhibition purposes. It 

 came to the Museum through the instrumentality of Dr. William S. 

 Disbrow, of Newark, New Jersej r , to whom we have been indebted for 

 much interesting material in }^ears past. 



Of historical interest, the division has also received from this same 

 gentleman one of the first known crystals of American spodumene, 

 forming one of the lot exhibited by Dr. Edward Hitchcock in New 

 England in the early part of the last century. 



2. An example of the recently discovered and described pink spodu- 

 mene known locally as kunzite and utilized as gem material; the gift 

 of Mr. F. M. Sickler. 



3. A specimen of anglesite with sulphur on galena from Monte Poni. 

 The material is of interest in showing the processes of oxidation and 

 reduction in the same specimen. 



4. A series of artificial stones used in the gem trade, including fine 

 examples of pastes, doublets, triplets, and stones artificially colored; 

 the gift of Mr. Oscar T. Johnasson. 



5. Cut turquoise from Idaho, Clay County, Alabama; the gift of 

 Mr. Eugene A. Smith. 



6. A set of paste models showing the various forms in which gems 

 are cut. 



7. Several important additions have been made to the meteorite 

 collection, including examples of the Trenzano fall, weighing L63 



