om of the
Constitution_ in two parts, "The Parliament" and "The Crown" (1886-1892.
3rd ed. 1907, pt. i. vol. ii.), are standard works.

ANSONIA, a city of New Haven county, Connecticut, U.S.A., coextensive
with the township of the same name, on the Naugatuck river, immediately
N. of Derby and about 12 m. N.W. of New Haven. It is served by the New
York, New Haven & Hartford railway, and by interurban electric lines
running N., S. and E. Pop. (1900) 12,681, of whom 4296 were foreign
born; (1910 census) 13,152. Land area about 5.4 sq. m. The city has
extensive manufactures of heavy machinery, electric supplies, brass and
copper products and silk goods. In 1905 the capital invested in
manufacturing was $7,625,864, and the value of the products was
$19,132,455. Ansonia, Derby and Shelton form one of the most important
industrial communities in the state. The city, settled in 1840 and named
in honour of the merchant and philanthropist, Anson Green Phelps
(1781-1853), was originally a part of the township of Derby; it was
chartered as a borough in 1864 and as a city in 1893, when the township
of Ansonia, which had been incorporated in 1889, and the city were
consolidated.

ANSTED, DAVID THOMAS (1814-1880), English geologist, was born in London
on the 5th of February 1814. He was educated at Jesus College,
Cambridge, and after taking his degree of M.A. in 1839 was elected to a
fellowship of the college. Inspired by the teachings of Adam Sedgwick,
his attention was given to geology, and in 1840 he was elected professor
of geology in King's College, London, a post which he held until 1853.
Meanwhile he became a fellow of the Royal Society in 1844, and from that
date until 1847 he was vice-secretary of the Geological Society and
edited its Quarterly Journal. The practical side of geology now came to
occupy his chief attention, and he visited various parts of Europe and
the British Islands as a consulting geologist and mining engineer. He
was also in 1868 and for many years examiner in physical geography to
the science and art department. He died at Melton near Woodbridge, on
the 13th of May 1880.

PUBLICATIONS.--_Geology, Introductory, Descriptive and Practical_ (2
vols., 1844); _The Ionian Islands_ (1863); _The Applications of
Geology to the Arts and Manufactures_ (1865); _Physical Geography_
(1867); _Water and Water Supply_ (Surface Water) (1878); and _The
Channel Islands_ (with R.G. Latham) (1862).