rio : a Spanish word meaning 'river

6. Arispe : a small town about 60 miles north-east of Ures, the capital of Sonora.

20. rOrégon, or Columbia River, rises at the base of the Rocky Mountains in British Columbia and flows into the Pacific Océan after a course of about 1400 miles.

6. 17. Fahrenheit, who replaced spirits of wine by quicksilver

in thermometers and invented the Fahrenheit scale, was born at Dantzig in 16S6 and died in 1736.