Plana, these are the Uruguay, which takes its source in the State of Santa Catarina; the Parana, which comes from Minas Geraes, with its numerous affluence, of which one, the Iguassu, comes from the State of Parana; and the Paraguay, which has its source in Parythain. At the extreme north is the Oypock which separates Brazil from French Guinea. In the afternoon about four o’clock a black thunderstorm came suddenly from the west. Magnificent clouds with strange fringes hung threateningly over the sea. Soon took all the sky. Caused a sudden fall of temperature from high wind. After sunset lightning made a glorious show in the darkness, the whole heavens ablaze, and ever and anon zigzag streaks
Original journal dimensions: 10 x 17 cm.
Holt-Atherton Special Collections, University of the Pacific Library
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John Muir, journals, drawings, writings, travel, journaling, naturalist