Quod erat double-face-iendum.
PROP. II.—PROBLEM.
From a given point to draw out a Radical Member to a given length.
Let A or his ancestors be the given point, and an A s s the given length; it is required to draw out upon the point of his ancestors a Radical member equal to an A s s.
Connect the A s s with A, his ancestors.
On the A s s and A his ancestors, describe an independent member S R I, Sir Robert Inglis.
Then with S R I, Sir Robert Inglis, draw out the A s s to G L and S A, or great literary and scientific attainments.
And with S R I, Sir Robert Inglis, let R Roebuck, be got into a line upon A, his ancestors.