1794. JOHN ANTHONY NICHOLAS CARITAT, marquis de Condorcet, died. His mathematical essays at an early age procured him a seat in the academy of sciences, of which he was afterwards elected secretary. He published the lives of several eminent men of his day, and was an active contributor to the famous _Encyclopedie_. He unfortunately took part in the revolution, and failing to keep pace with the ultra views of the Robespierre party, was proscribed, and died in prison either from want or by his own hand. 1801. RALPH ABERCROMBY died. He rose from a common soldier, through all the gradations, to the highest rank in the army; was appointed commander in chief of the expedition to Egypt, and landed after a severe contest at Aboukir bay. He was wounded and unhorsed at the battle of Alexandria, notwithstanding which he disarmed his antagonist, and kept the field during the day and was victorious. He was conveyed on board the admiral's ship where he lingered a few days, and died. He was buried beneath the castle of St. Elmo, in Malta. 1802. The planet Pallas discovered by Dr. Olbers, at Bremen. Its revolution round the sun occupies 4 years, 7 months and 11 days. 1805. The county of Jefferson, in northern New York, erected. 1811. A hereditary monarchy established in Hayti, and Christophe declared king, by the title of Henry I. 1814. Action in the neutral port of Valparaiso between the United States frigate Essex, Capt. Porter, 52 guns, 255 men, and the British ship Phebe and sloop of war Cherub, in all 81 guns and 500 men. After a most sanguinary conflict of more than 2 hours, the Essex was captured, with the loss of 58 killed. 1818. ALEXANDER SABES PETION, president of Hayti, died. He joined the revolution at the age of 20, and when the blacks had succeeded in gaining their independence, he was appointed governor of the western province, and in 1807 elected president. 1836. RICHARD VALPY, an eminent Greek and Latin scholar, died, aged 82, at Kensington, England. 1838. THOMAS MORTON, one of the most successful of modern dramatists, died at London, aged 74. 1849. The king of Prussia elected emperor by the German parliament at Frankfort. He did not accept. 1852. JOHN HAVILAND, an eminent architect, died at Washington, aged 60. He was born in England, and commenced his career in Russia. He came to this country highly recommended by J. Q. Adams, and constructed many public works. He paid especial attention to the construction of jails and prisons. 1853. A peace address signed by 4000 English merchants, bankers and traders, presented to Napoleon III at the Tuilleries. 1854. War formally declared against Russia by Great Britain and France. 1855. The United States marshal at Philadelphia arrested 12 men who had enlisted in that city for a foreign legion. MARCH 29. 403. Battle of Pollentia and defeat of the Huns under Alaric their leader.