In 1914 what did the White Court decide in Weeks v. United States for probable cause and why did they decide that?

The Evolution of Criminal Procedure in Law Enforcement

For example, in 1914 what did the White Court decide in Weeks v. United States for probable cause and why did they decide that? Then go into 1925 with the Taft Court – what did they decide in Carroll v. United States as it pertains to vehicle stops and searches and why?