"By no means!" the Professor answered with a proud smile. "After about
a minute, he quietly turns a tap at the lower end of the P. B.--all
the water runs back into the jug and there you are again!"

"But how in the world is he to get out of the bag again?"

"That, I take it," said the Professor, "is the most beautiful part of
the whole invention. All the way up the P.B., inside, are loops for the
thumbs; so it's something like going up-stairs, only perhaps less
comfortable; and, by the time the A. T. has risen out of the bag, all
but his head, he's sure to topple over, one way or the other--the Law
of Gravity secures that. And there he is on the floor again!"

"A little bruised, perhaps?"

"Well, yes, a little bruised; but having had his plunge-bath: that's
the great thing."

"Wonderful! It's almost beyond belief!" murmured the Sub-Warden.
The Professor took it as a compliment, and bowed with a gratified smile.

"Quite beyond belief!" my Lady added--meaning, no doubt, to be more
complimentary still. The Professor bowed, but he didn't smile this
time. "I can assure you," he said earnestly, "that, provided the bath
was made, I used it every morning. I certainly ordered it--that I am
clear about--my only doubt is, whether the man ever finished making
it. It's difficult to remember, after so many years--"

At this moment the door, very slowly and creakingly, began to open,