hing
with solvent naphtha, or more efficiently with the higher boiling
portion of the pyridine bases. The naphtha removes mostly only the
phenanthrene, but the carbazol can be removed only by pyridine, or by
subliming or distilling the anthracene over caustic potash. The whole
of the anthracene is sold for the manufacture of artificial alizarine.

BIBLIOGRAPHY.--The principal work on Coal-tar is G. Lunge's _Coal-tar
and Ammonia_ (3rd ed., 1900). Consult also G. P. Sadtler, _Handbook of
Industrial Organic Chemistry_ (1891), and the article
"Steinkohlentheer," Kraemer and Spreker, in _Encyklopadisches Handbuch
der technischen Chemie_ (4th ed., 1905, viii. 1). (G. L.)

FOOTNOTE:

[1] The illustrations in this article are from Prof. G. Lunge's _Coal
Tar and Ammonia_, by permission of Friedrich Vieweg u. Sohn.

COALVILLE, a town in the Loughborough parliamentary division of
Leicestershire, England, 112 m. N.N.W. from London. Pop. of urban
district (1901) 15,281. It is served by the Midland railway, and there
is also a station (Coalville East) on the Nuneaton-Loughborough branch
of the London & North-Western railway. This is a town of modern growth,
a centre of the coal-mining district of north Leicestershire. There are
also iron foundries and brick-works. A mile north of Coalville is
Whitwick, with remains of a castle of Norman date, while to the north
again are slight remains of the nunnery of Gracedieu, founded in 1240,
where, after its dissolution, Francis Beaumont, the poet-colleague of
John Fletcher, was born about 1586. In the neighbourhood is the Trappist
abbey of Mount St Bernard, founded in 1835, possessing a large domain,
with buildings completed from the designs of A. W. Pugin in 1844.

COAST (from Lat. _costa_, a rib, side), the part of the land which meets
the sea in a line of more or less regular form. The word is sometimes
applied to the bank of a river or lake, and sometimes to a region (cf.
Gold Coast, Coromandel Coast) which may include the hinterland. If the
coast-line runs parallel to a mountain range, such as the Andes, it has
usually a more regular form than when, as in the _rias_ coast of west
Brittany, it crosses the crustal folds. Again, a recently elevated coast
is more regular than one that has been long exposed to wave action. A
recently depressed coast will show the irregularities that were
impressed upon the surface before submergence. Wave erosion