HOW ON ANALYSIS OF TWO SPRING HILL COALS. 99 



"The average dip is supposed to be about 30°, which would give 

 a vertical thickness of measures from the 13' 6" seam to the 2' 

 seam of about 1200 feet. The dip increases as the seams are fol- 

 lowed on their strike to the northward. The country is for the 

 most part level and thickly forested, and the rocks are much 

 obscured by drift, so that it becomes impossible to trace out the 

 seams without the aid of pits and borings." 



I. The so-called "11 foot seam," or "Springhill main seam"* 

 or " Black seam." 



This seam of coal, which is according to report just quoted, 12' 

 3" in thickness, is the property of, and worked by the Springhill 

 Mining Company, who have now two slopes, the east and west, 

 distant from each other about f of a mile. The west slope has 

 been driven some 450 feet, with a main level of about £ mile. 

 The east slope has been driven 850 feet, and will henceforth be the 

 chief output. 



The specimens from which the following analyses were made, 

 were got by myself during the summer of 1874, while on a Topo- 

 graphical Survey under Prof. Oram, C. E., and will represent 

 fairly the average quality of the coal exported by this company, at 

 their wharf at Dorchester, N. B. 



The analysis gave the following results : — 



(I.) Ordinary coking (air-dry specimen). 



Hydroscopic moisture 3.86 > ^j vq1 ^^ 



Volatile combustible matter 26.46 ) 



Fixed carbon 65.23 



Ash 4.45 



coke 69.68 



100.00 

 Theoretical evaporative power. . 8.858 lbs. 

 Specific gravity 1.29 



Calculated weight of 1 cub. ft. unbroken 80.48 lbs. 



" " " " broken 54.08 



Space for 1 ton (2240 lbs.) on stowage (economic weight) 41.41 c. ft. 



* E. Hartley, in "Notes on Coal from the Springhill Coal Field," who, however, 

 gives the thickness as 11' 3". Geological Survey Canada, 1866-69, page 445. 



