DEPARTMENT OF METALLURGY AND ECONOMIC GEOLOGY. 211 



During the year the curator has published a paper entitled " Photo- 

 graphing the Interior of a Coal Mine," in the Transactions of the Ameri- 

 can Institute of Mining Engineers, vol. 16, page 307. In this is given 

 an account of taking some photographs of the interior of the Kohinoor 

 Colliery by electric light during the summer of 1884. The paper is illus- 

 trated by plates of four of the views obtained, copied by the Levytype 

 process, direct from the negative, without any retouching. 



Mr. J. F. Kemp has published two articles descriptive of the south- 

 east Missouri lead regions, based upon the notes and collections made 

 by him when collecting material for this department for the ISTew Or- 

 leans Exposition in 1884. 



The first paper is entitled " Notes on the Ore Deposits and Ore Dress- 

 ing in Southeast Missouri," published in the School of Mines Quarterly, 

 vol. 9, page 74, and embodies his observations upon the ore deposits, 

 the methods of mining, and the mechanical dressing of the ore. The 

 last subject is treated very fully. 



The second paper is entitled " Notes on Lead Smelting in Southeast 

 Missouri," published in the School of Mines Quarterly, vol. 9, page 212, 

 and gives a description of the various smelting processes followed, 

 together with many valual)le analyses. 



