1.And, that this measuring of shadows produced a false calculation, because their length depends so much on the height of the sun, and other adventitious circumstances.
2.Footsteps began stamping up and down the bare stairs, the comers inspecting the goods, some of which were of so quaint and ancient a make as to acquire an adventitious value as art.
3.Someone with a positive manner, perhaps a detective, used the expression 'mad man' as he bent over Wilson's body that afternoon, and the adventitious authority of his voice set the key for the newspaper reports next morning.