The tempest which was used mainly as a symbol of adverse fortune in the Comedies and more subtly, though only imagis-tically, in the Histories, becomes from Julius Caesar onwards violent in effect and meaning, closely in-knitted in the whole.

Ideas impacted on the mind.

It ornamented, not only the chair of Saint Ambrose at Milan, but also the dalmaticas of the primitive Christians.

(i) The identity relation on a set A is an antisymmetric relation. (ii) Let R be a relation on the set N of natural numbers defined by x R y ⇔ 'x divides y' for all x, y ∈ N. This relation is an antisymmetric relation on N.