t Rome was opened. On the 19th of September 1863 he
was ordained priest, and in 1864 obtained the degree of D.D. Returning
to America, he was appointed professor of Dogmatic Theology and Sacred
Scripture, and director of the ecclesiastical seminary of Seton Hall
College at South Orange, New Jersey; soon afterwards he was made
vice-president of the institution; and in 1868 became president,
succeeding Rev. Bernard J. M'Quaid (b. 1823), the first Roman Catholic
bishop of Rochester. In October 1868 Corrigan became vicar-general of
Newark, a diocese then including all the state of New Jersey. When
Archbishop Bayley was transferred to the see of Baltimore in 1873, Pius
IX. appointed Corrigan bishop of Newark. In 1876 he resigned the
presidency of Seton Hall College. In 1880 Bishop Corrigan was made
coadjutor, with the right of succession, to Cardinal McCloskey,
archbishop of New York, under the title of archbishop of Petra; and
thereafter nearly all the practical work of the archdiocese fell to his
hands. He was at the time the youngest archbishop in the Catholic Church
in America. On the death of Cardinal McCloskey in 1885 Archbishop
Corrigan became metropolitan of the diocese of New York. He died on the
5th of May 1902. He was a scholar of much erudition, with great power of
administrative organization, simple, generous and kindly in character.
The earlier years of his archiepiscopate were disturbed by his
controversy with Edward McGlynn (1839-1900), a New York priest (and a
fellow-student with Corrigan at Rome), who disapproved of parochial
schools, refused to go to Rome for examination, and was excommunicated
in July 1887, but returned to the church five years later.

See _Michael Augustine Corrigan: A Memorial_, with biographical sketch
by John A. Mooney (New York, 1902).

CORROSIVE SUBLIMATE, MERCURIC CHLORIDE, PERCHLORIDE OF MERCURY (HgCl2),
a white solid obtained by the action of chlorine on mercury or calomel,
by the addition of hydrochloric acid to a hot, strong solution of
mercurous nitrate, Hg2(NO3)2 + 4HCl = 2HgCl2 + 2H2O + 2NO2, and,
commercially, by heating a mixture of mercuric sulphate and common salt,
the mercuric chloride subliming and being condensed in the form of small
rhombic crystals. It melts at 288 deg., and boils at 303 deg.; it is
sparingly soluble in cold water, more so in hot; it is very soluble in
alcohol and ether. It is soluble in hydrochloric acid forming compounds
such as HgCl2.2