The distance from the sun to the planet fluctuates between very considerable limits.
"The Story of the Heavens"
Robert Stawell Ball
The amount of superior families oscillates rather than changes; that is, it fluctuates within fixed limits; and, for all inferior families, being composed either of shopkeepers or of menial servants, they are determined by the number, or, which, on a large average, is the same, by the pecuniary power, of their employers.
"Biographical Essays"
Thomas de Quincey
The whole of Samar annually yields from two hundred to three hundred piculs, whose value ranges between twenty-five and fifty dollars per picul, while in Manila the price is generally five to ten dollars higher; but it fluctuates very much, as the same product is brought from many other localities and at very irregular intervals of time.
"The Former Philippines thru Foreign Eyes"
Tomás de Comyn Fedor Jagor Rudolf Ludwig Carl Virchow Charles Wilkes