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The diagram "shows the isotherms in a cyclone of, say, 500 miles in diameter, as indicated by the circle, along which also the direction of the wind is shown by means of arrows." -Waldo, 1896

Isotherms in a Cyclone

The diagram "shows the isotherms in a cyclone of, say, 500 miles in diameter, as indicated by the circle,…

"Isobars, isotherms, and winds at various altitudes in a cyclone." -Waldo, 1896

Isobars and Isotherms

"Isobars, isotherms, and winds at various altitudes in a cyclone." -Waldo, 1896

"Isobars, isotherms, and winds at various altitudes in a cyclone." -Waldo, 1896

Isobars and Isotherms

"Isobars, isotherms, and winds at various altitudes in a cyclone." -Waldo, 1896