Soda Springs

“Lydia Waters came equipped with lemon extract and sugar and had an epicurean morning among the springs while her company lay over to recruit. She broke off some of the spongy yellowish deposit and took it with her. At first, she said, it had a color and texture like jelly cake; but in a week or so it turned pure white. Others, not prepared for the novelty of soda water, wondered how liquid could boil and not be hot. The very early wagon trains used it successfully in place of yeast.”

[N.B. Soda Springs is a landmark on the Oregon Trail, after the point where the Pony Express route separates and heads south toward Utah.]