Kingdom) of 225,181,300 tons in 1900. The chief minerals raised in England, as stated in the annual home office report on mines and quarries, appear in order of value, thus: coal, iron ore, clay and shale, sandstone, limestone, igneous rocks, salt, tin ore. Coal surpasses all the other minerals to such an extent that, taking the year 1903 as a type, when the total value of the mineral output was very nearly £70,000,000, that of coal is found to approach £61,000,000. Coal-fields. The position of the various principal coal-fields has been indicated in dealing with the physical geography of England, but the grouping of the fields adopted in the official report may be given here, together with an indication of the counties covered by each, and the percentage of coal to the total bulk raised in each county. These figures are furnished as a general demonstration of the geographical distribution of the industry, but are based on the returns for 1903. +----------------+-----------------------------+-------------+ | Coal-fields. | Counties. | Percentage. | +----------------+-----------------------------+-------------+ | Northern | Durham | 22.37 | | | Northumberland | 7.48 | +----------------+-----------------------------+-------------+ | | Yorkshire (West Riding)[20] | 17.76 | | Yorkshire, &c. | Derbyshire | 9.40 | | | Nottinghamshire | 5.41 | +----------------+-----------------------------+-------------+ | Lancashire | Lancashire | 15.26 | | and Cheshire | Cheshire | 0.25 | |................| Leicestershire | 1.31 | | | Shropshire | 0.50 | | Midland[21] | Staffordshire | 8.10 | | | Warwickshire | 2.12 | | | Worcestershire | 0.44 | +----------------+-----------------------------+-------------+ | | Cumberland | 1.37 | | | Gloucestershire[22] | 0.87 | | Small detached | Somersetshire | 0.62 | | | Westmorland | 0.07 | | | Yorkshire (North Riding)[20]| ·· | +----------------+-----------------------------+-------------+ | | Monmouthshire[23] | 6.67 | +----------------+-----------------------------+-------------+