"is when a lighter applies to one more weighty, and before he can come to a perfect Conjunction of him, he gets to a Conjunction of a third, and this is called Frustration; for Example suppose Saturn in 20 degrees of Aries, Jupiter in 19 Aries and Mars in 1 of the same Sign, here before, Mars gets to Conjunction of Jupiter, Jupiter gets to a Conjunction of Saturn, by which means Mars is frustrated." [PA