266 REPORT OF NATIONAL MUSEUM, 1884. 



the Loyal Sock Coal Basin in Sullivan County, Pennsylvania. The 

 Pennsylvania Coal Company contributed a lithograph of its Barnura 

 colliery breaker afc Pittston, Pa. Mr. A. B. Cochrane donated a chart 

 of the anthracite coal fields of Pennsylvania and their outlet to mar- 

 ket, including a list of the names of the collieries and a statistical 

 table showing the annual shipment of coal. 



Mr. P. W. Sheafer, of Pottsville, sent several tracings, one which rep- 

 resents the columnar section of the coal measures in the vicinity of 

 Kohinoor colliery, Schuylkill County, Pennsylvania, and another a sec- 

 tion of the mammoth bed in the same colliery, showing the top and 

 bottom splits, and the partings of slate, charcoal, and bone ; also a 

 diagram of the progress of the anthracite coal trade of Pennsylvania, 

 with a statistical table showing the output and estimated quantity of 

 anthracite coal in the several coal fields and the relative amount of 

 waste. Mr. John H. Strauch, resident engineer of the Philadelphia and 

 Beading Coal and Iron Company, sent two tracings ; one represents the 

 underground operation of the standard 20-inch bull-pump used in drain- 

 ing the mine, including cross-sections of the main gangway and sump, 

 and the pump and wagon ways of the pump-slope ; the other shows the 

 manner in which the two shafts of this collery were sunk, and indicates, 

 with full measurements, the positions of the diamond-drill holes used 

 in blasting the rock. Mr. John A. Pollard, resident engineer of the 

 Shenandoah district of the Philadelphia and Beading Coal and Iron 

 Compay, has supplied an excellent sketch of the ground view of Kohi- 

 noor colliery, with tidal elevations, illustrative of the photographic 

 work conducted in that collery last summer. Mr. E. F. C. Davis, super- 

 intendent of the Philadelphia and Beading Coal and Iron Company's 

 Pottsville shops, has sent a tracing and cyanotype of the indicator cards 

 from the steam-engine used to drive the dynamo in the Indian Bidge 

 colliery September 6, 1884. 



Two cyanotypes of coal- washing machinery, showing the construc- 

 tion of the building, and the generah interior arrangement, were donated 

 by Mr. S. Stutz, M. E., of Pittsburg, Pa. 



At Bernice were obtained specimens of coal, rock, slate, fire-clay, 

 mineral charcoal, and a full set of mining tools. 



At Long Valley were obtained samples of coal from the top and bot- 

 tom benches, slate from the roof, and fire-clay from the bottom of the 

 mine, together with five negatives of typical scenes about Long Val- 

 ley: (1) the Long Valley coal plane; (2) a group of miners in working- 

 dress; (3) a coal trip emerging from the mouth of the drift; (4) exter. 

 ior view of one of the Long Valley dwelling-houses (No. 45), occupied 

 by Mr. Carroll, the inside superintendent, and (5) an interior view of the 

 same dwelling. 



The Pennsylvania anthracite measures attain their greatest depth 

 at Pottsville, where they are at least 3,000 feet thick, and include per- 

 haps thirty coal beds, of which fifteen are workable. In the Pottsville 



