Today in History - July 18

Today is Wednesday, July 18, the 199th day of 2007. There are 166 days left in the year.

Today's Highlight in History:

On July 18, 1947, President Harry Truman signed the Presidential Succession Act, which placed the speaker of the House and the Senate president pro tempore next in the line of succession after the vice president.

On this date:

In A.D. 64, the Great Fire of Rome began.

In 1792, American naval hero John Paul Jones died in Paris at age 45.

In 1927, Ty Cobb hit safely for the 4,000th time in his career.

In 1932, the United States and Canada signed a treaty to develop the St. Lawrence Seaway.

In 1936, the …