II. MINING. 883 



3348. Muthung's Survey Map of the mountain district of 

 Beuthen, with coloured boundaries of the mining fields and 

 districts, scale -^5^. 



Royal Prussian Upper Mining Court for the Provinces of 

 Silesia, Posen, and Prussia (Breslau). 



3349. Survey Map of the preliminary works for the pro- 

 jected water supply of the industrial districts of Upper Silesia, 

 scale -g-oVtf, autographically printed on stone (M. Spiegel, Breslau). 



Royal Prussian Upper Mining Court for the Provinces of 



Silesia, Posen, and Prussia (Breslau). 



Example of a special map for industrial use for marking projected 

 railroads, waterways, &c. A reprint from the original survey map scale 

 1:8000. 



3350. Map of the Industrial District of Upper Silesia, 



scale 1 : 8000 ; autographic lithography. 



Royal Prussian Upper Mining Court for the Provinces of 

 Silesia, Posen, and Prussia (M. Spiegel, Breslau), 



3351. Attempt towards a Petro graphic and " Flotz " 



Map of the Waldenburg mountain district, drawn by the mining 

 surveyor, Lange, in the year 1807. 



Royal Prussian Upper Mining Court for the Provinces of 

 Silesia, Posen, and Prussia (Breslau). 



This map is of historical interest, as the first attempt to form a geological 

 map representing the relations between important mining bauds in the Walden- 

 burg coal district. The scientific and technical observations appear, even at 

 the present time, to be quite correct. 



3352. " Flotz Map of the Coalfields at Kohlau (now 

 the Consolidated Abendrothe Mine), drawn by the mining sur- 

 veyor, Schultze, in the year 1804. 



Royal Prussian Upper Mining Court for the Provinces of 



Silesia, Posen, and Prussia (Breslau). 

 A map some years older than the preceding. 



3353. Five Interesting Sections of large Basalt Quarries. 



Mineralogical and Geological Cabinet of the School of 

 Industry, Casscl (Dr. H. Mo'hl). 



3R2 



