1812. JOHN HENRY'S plot to dismember the Union disclosed to congress. Henry received $50,000 public money for disclosing it, and sailed immediately for France. 1814. Battle of Laon, in which Napoleon was defeated by Marshal Blucher. 1822. EDWARD DANIEL CLARKE, professor of mineralogy at Cambridge and a celebrated traveler and tourist, died. 1823. JOHN HENRY VAN SWINDEN, a Dutch philosopher, died. He was an author on various subjects, and a man of great erudition. 1825. ANNA LETITIA BARBAULD, an English authoress of great reputation in her day, died. She was early taught the languages, and became distinguished for her learning. She retained great vigor of mind and body to the extreme age of 90. 1834. Snow fell at Rome, the first event of the kind on record in 240 years. (See March 25, 1595.) 1840. GEORGE GLEIG died at Stirling, Scotland, aged 87; distinguished for more than half a century as a scholar, critic, metaphysician and theologian. 1847. Battle of Vera Cruz. MARCH 10. 222. HELIOGABALUS, emperor of Rome, assassinated. He was a cruel, vindictive and licentious tyrant. 1333. LADISLAUS III of Poland died. He oppressed the people till they revolted and placed Wenceslaus upon the throne. On the death of the latter he was reinstated and governed with justice and moderation. 1668. JOHN DENHAM, a British poet, died. One of his poems, _Cooper's Hill_, is commended by the ablest critics. 1673. HENRIETTA COLIGNI, a French poetess of much celebrity, died. 1683. The first council and assembly of Pennsylvania met at Chester. The session occupied 22 days. 1686. JAMES II granted a general pardon to many of his subjects, excepting among others the girls of Taunton who gave a Bible and sword to Monmouth. James never favored the Bible. 1726. The Lyford giant born; when five years of age he could lift one hundred weight with one hand. 1736. WILLIAM COSBY, captain general and commander in chief of the province of New York, died, almost universally detested. 1774. WILLIAM BROWNE, an English physician, died. The active part he took in the contest against the licentiates, occasioned his being introduced by Foote into his play of the _Devil upon Two Sticks_. He is distinguished by many lively essays in English, and Latin prose and verse. 1776. ELIAS CATHERINE FRERON, a French _litterateur_, died. He was the constant subject of Voltaire's satire, who called him the tyrant, rather than the king of literature. 1776. The British soldiery, contrary to orders, plundered Boston. 1783, ANTHONY LOYDI, a farmer of Amezquet, Spain, died, aged 114. He had never been sick until a few days before his death, always abstained from wine and tobacco, and retained his senses, his teeth and hair until he died. 1785. N. SABLIER, an eminent French author, died at Paris. 1789. The city of London brilliantly illuminated on account of the convalescence of the king.