Multaque corporibus transitione nocent."

["When we look at people with sore eyes, our own eyes become sore.
Many things are hurtful to our bodies by transition."
--Ovid, De Rem. Amor., 615.]

--so the imagination, being vehemently agitated, darts out infection
capable of offending the foreign object. The ancients had an opinion of
certain women of Scythia, that being animated and enraged against any
one, they killed him only with their looks. Tortoises and ostriches
hatch their eggs with only looking on them, which infers that their eyes
have in them some ejaculative virtue. And the eyes of witches are said
to be assailant and hurtful:--

"Nescio quis teneros oculus mihi fascinat agnos."

["Some eye, I know not whose is bewitching my tender lambs."
--Virgil, Eclog., iii. 103.]

Magicians are no very good authority with me. But we experimentally see
that women impart the marks of their fancy to the children they carry in
the womb; witness her that was brought to bed of a Moor; and there was
presented to Charles the Emperor and King of Bohemia, a girl from about
Pisa, all over rough and covered with hair, whom her mother said to be so
conceived by reason of a picture of St. John the Baptist, that hung
within the curtains of her bed.

It is the same with beasts; witness Jacob's sheep, and the hares and
partridges that the snow turns white upon the mountains. There was at my
house, a little while ago, a cat seen watching a bird upon the top of a
tree: these, for some time, mutually fixing their eyes one upon another,
the bird at last let herself fall dead into the cat's claws, either
dazzled by the force of its own imagination, or drawn by some attractive
power of the cat. Such as are addicted to the pleasures of the field,
have, I make no question, heard the story of the falconer, who having
earnestly fixed his eyes upon a kite in the air; laid a wager that he
would bring her down with the sole power of his sight, and did so, as it
was said; for the tales I borrow I charge upon the consciences of those
from whom I have them. The discourses are my own, and found themselves
upon the proofs of reason, not of experience; to which every one has
liberty to add his own examples; and who has none, let him not forbear,
the number and varieties of accidents considered, to believe that there
are plenty of them; if I do not apply them well, let some other do it for
me. And, al