Lobe, a division, a distinct part; generally applied to the two divisions of the lungs.

Log Cabin, a cabin or house built of logs, as is generally the case in newly-settled countries.

Loire, the largest river of France, being about five hundred and fifty miles in length. It rises in the mountains of Cevennes, and empties into the Atlantic Ocean, about forty miles below the city of Nantes. It divides France into two almost equal parts.

London Medical Society, a distinguished association, formed in 1773. It has published some valuable volumes of its Transactions. It has a library, of about 40,000 volumes, which is kept in a house presented to the Society, in 1788, by the celebrated Dr. Lettsom, who was one of its first members.

Louis XIV., a celebrated King of France and Navarre, who was born Sept. 5, 1638, and died Sept. 1, 1715. His mother having before had no children, though she had been married twenty-two years, his birth was considered as a particular favor from heaven, and he was called the 'Gift of God.' He is sometimes styled 'Louis the Great,' and his reign is celebrated as an era of magnificence and learning, and is notorious as a period of licentiousness. He left behind him monuments of unprecedented splendor and expense, consisting of palaces, gardens, and other like works.

Lumbar, (from the Latin lumbus, the loin,) relating or pertaining to the loins.

Lunacy, writ of, a judicial proceeding, to ascertain whether a person be a lunatic.

Mademoiselle, the French word for Miss, a young girl.

Magnesia, a light and white alkaline earth, which enters into the composition of many rocks, communicating to them a greasy or soapy feeling, and a striped texture, with sometimes a greenish color.

Malaria, (Italian, mal'aria, bad air,) a noxious vapor or exhalation; a state of the atmosphere or soil, or both, which, in certain regions, and in warm weather, produces fever, sometimes of great violence.