Note 15 — BOOK III.
Rowland Smith translation
To put on Pluto's helmet was a proverb for becoming invisible. See Hom. Il. v. 844. In Crabbe's "Parish Register" the coat is made to serve the same purpose:—-
"His shoes of swiftness on his feet he placed, His coat of darkness on his loins he brac'd, His sword of sharpness in his hand he took."