There are so many quarries producing stone of very similar quality and characteristics, classed under this head, that it would be useless to describe them in detail.

These stones come chiefly from the coal measures and millstone grit series; a few come from the new red sandstone formation.

In consequence of the large number of quarries in Yorkshire, the stone is commonly known as Yorkshire stone, but a great deal of similar stone is found in the adjacent counties.

Of these stones the finer grained are suitable for building purposes, while the grits are more adapted for heavy engineering works.

The sandstones from the millstone grit or coal measures are considered to offer the greatest resistance to injury by fire, for which reason Minera stone was selected for the National Safe Deposit Co.'s buildings.3

A few of the quarries are mentioned in the Table at pp. 39 to 48. There are several round about the principal towns.

The best flags and landings come from near Bradford and Halifax.