The familiar military Uncertainties now began to show themselves in the movements of Mac-Mahon and his troops.
"A History of the Third French Republic"
C. H. C. Wright
These figures do not give the exact position for the normal spiral ascent of the sun, which is about fifty seconds for each hour, or five minutes for each six hours; but the Uncertainties of error by refraction and ice-drift do not permit such accuracy of observations.
"My Attainment of the Pole"
Frederick A. Cook
This is an hour of Uncertainties.
"The Desert Valley"
Jackson Gregory