COMMERCE AND INDUSTRY.
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to iron, namely, copper, lead, tin, and silver, were as follows in the same period of twelve years : —
The 107,427,557 tons of coal produced in the United Kingdom in 1869 were raised from 2,900 collieries. The quantity was 4,286,400 tons more than in 1868, and 2,927,077 tons" more than in 1867. In the counties of Durham and Northumberland 24,394,167 tons were raised in 1S68, or 473,277 tons less than in 1867. In Cumberland 1,378,026 tons were raised in 1868, a decrease of 134,488 tons. In Yorkshire 9,740,510 tons, a decrease of 103,065 tons. In Derbyshire 4,957,879 tons, an increase of 407,329 tons. In Nottinghamshire 1,508,439 tons, a decrease of 66,561 tons. In Leicestershire 608,088 tons, a decrease of 541,912 tons. In Warwickshire 624 859 tons, a decrease of 255,991 tons. In Staffordshire and Worcestershire 12,294,780 tons, a decrease of 231,774 tons. In Lancashire 12,800,500 tons, a decrease of 41,000 tons. In Cheshire 937,500, an increase of 2,500 tons. In Shrop- shire 1,495,500 tons, a decrease of 63,000 tons. In Gloucestershire and Somerset 1,969,000 tons, a decrease of 6,000 tons. In Mon- mouthshire 4,250,500 tons, a decrease of 319,000 tons. In South Wales 8,959,500 tons, a decrease of 132,800 tons. In North Wales 2,385,000 tons, an increase of 13,750 tons. In Scotland 14,709,959 tons, an increase of 584,016 tons. In Ireland 126,950 tons, or an increase of 1,950 tons. The value of coal in the returns above given was calculated at 5s. per ton, being the average price at the pit's mouth.
The exports of coal from the United Kingdom to foreign countries quadrupled within the last twenty years. They amounted to 2,483,161 tons in 1847 ; to 3,468,545 tons in 1851 : to 5,789,779 tons in 1856; to 7,855,115 tons in 1861 ; to 8,800,420 tons in 1864: to 9,170,477 tons in 1865: to 9,616,244 tons in 1866; to
