134 GEOLOGICAL RECONNOISSANCE 
fire is fairly started ; and this is probably the reason why these coals, when 
first introduced into the eastern cities, were rejected as altogether unman- 
ageable and impracticable. Now, even the harder anthracites are in com- 
mon use in Philadelphia and New York for heating apartments, and some- 
times in open grates, with temporary blowers; and it is now universally 
admitted that, for forges, rolling mills, and blast furnaces for the manufac- 
ture of iron, the semi-anthracites are unsurpassed. 
No. 11—PART OF THE BOSTON MOUNTAIN RANGE, NEWTON COUNTY. 
