To every room there was an open and a secret passage.—Johnson.
In a short time these become a small tree, an inverted pyramid resting on the apex of the other.—Thoreau.
All men are at last of a size.—Emerson.
At the approach of spring the red squirrels got under my house, two at a time.—Thoreau.
Equivalent to the word each or every.
193. Often, also, the indefinite article has the force of each or every, particularly to express measure or frequency.
It would be so much more pleasant to live at his ease than to work eight or ten hours a day.—Bulwer
Compare to Sec. 184.
Strong beer, such as we now buy for eighteenpence a gallon, was then a penny a gallon.—Froude
With such, many, what.