DEPAETMENT OF METALLURGY AND ECONOMIC GEOLOGY. 145 



donation at E"ew Orleans and tbe ariival in Washington the contribu- 

 tions from the New Orleans Exposition were not accessioned until after 

 July 1. 



The general state of the collections remains as at the last report. 

 After tbe close of the New Orleans Exposition, when the small pos- 

 sibility of its reopening became evident, the work of collecting material 

 was carried forward with vigor and marked success. In making col- 

 lections for this department material of only two kinds was solicited : 

 first, that which was intrinsically valuable, and, second, material that 

 would fill gaps in our present collections. 



The material consists almost entirely of ores, the display of metal- 

 lurgical material at New Orleans being very poor. Besides the material 

 for this department, a large amount of material for the rock depart- 

 ment and a considerable amount for the mineral department were col- 

 lected by this department. 



From Arkansas were obtained specimens of stibnite, manganese ore, 

 novaculite, and coals, contributed by Dr. J. Guy Lewis, of Little Eock. 



From Colorado were obtained a very interesting and valuable collec- 

 tion of the ores of Lake County, contributed by Mr. Lewis R. Sharp, 

 of Loadville, and a small but interesting collection from Gilpin County, 

 contributed by Br. Hall, of Central City, Colorado. 



From California were obtained specimens of antimony, tin, mercury, 

 and iron ores, together with a catalogue of the collection in the State 

 museum, contributed by Prof. Henry G. Hanks. 



From Dakota was obtained a small but interesting collection of the 

 tin ores of the Black Hills, together with some specimens of mica. 



From Georgia were obtained specimens of manganese and iron ores 

 and some very valuable specimens of corundum presented in exchange 

 by Mr. N. P. Pratt. 



The Territory of Idaho was poorly represented in our former collec- 

 tions, and a special effort was made to strengthen this collection. Col. 

 G. W. Shoup, the commissioner, presented a large series of the gold 

 and silver ores of Idaho, which will add materially to our collections 

 and fill an important gap. 



From Kentucky was obtained a very large collection of the coals of 

 the State, including eight sections of veins, presented by Professor 

 Proctor, the State geologist. 



From Michigan was obtained a large series of iron ores, more espe- 

 cially those of the Menominee region, which was formerly very poorly 

 rej)resented in our collections. This is one of the regions that have 

 been mentioned in each of the former annual reports as having been 

 developed since the Centennial, and from which a collection should be 

 obtained. This collection therefore fills a very important gap in our 

 permanent collections, and was presented by Mr. F. W. Noble. 



From Montana was obtained a large collection of the silver-lead and 

 H. Mis. 15, pt. 2 10 



