America has 2,800 miles of canals and 3,300 miles of rails. Dental school in Baltimore. Polka comes to America. Oysters canned in Baltimore. McCormick's reaper gets improvements.
Grapefruit comes to Florida.
First Hereford cattle in New York. A world Anti-Slavery meeting in London displays split in American efforts, some of whom demand inclusion of women's rights. James Prescot Joule describes the first law of thermodynamics. A new cholera epidemic worldwide will kill millions in the next decade. Adhesive postage stamps in England.