“Conceive a jelly-fish such as sails in our summer seas, bell-shaped and of enormous size—­far larger, I should judge, than the dome of St. Paul’s.  It was of a light pink colour veined with a delicate green, but the whole huge fabric so tenuous that it was but a fairy outline against the dark blue sky.  It pulsated with a delicate and regular rhythm.  From it there depended two long, drooping, green tentacles, which swayed slowly backwards and forwards.  This gorgeous vision passed gently with noiseless dignity over my head, as light and fragile as a soap-bubble, and drifted upon its stately way.

“I had half-turned my monoplane, that I might look after this beautiful creature, when, in a moment, I found myself amidst a perfect fleet of them, of all sizes, but none so large as the first.  Some were quite small, but the majority about as big as an average balloon, and with much the same curvature at the top.  There was in them a delicacy of texture and colouring which reminded me of the finest Venetian glass.  Pale shades of pink and green were the prevailing tints, but all had a lovely iridescence where the sun shimmered through their dainty forms.  Some hundreds of them drifted past me, a wonderful fairy squadron of strange unknown argosies of the sky—­creatures whose forms and substance were so attuned to these pure heights that one could not conceive anything so delicate within actual sight or sound of earth.

“But soon my attention was drawn to a new phenomenon—­the serpents of the outer air.  These were long, thin, fantastic coils of vapour-like material, which turned and twisted with great speed, flying round and round at such a pace that the eyes could hardly follow them.  Some of these ghost-like creatures were twenty or thirty feet long, but it was difficult to tell their girth, for their outline was so hazy that it seemed to fade away into the air around them.  These air-snakes were of a very light grey or smoke colour, with some darker lines within, which gave the impression of a definite organism.  One of them whisked past my very face, and I was conscious of a cold, clammy contact, but their composition was so unsubstantial that I could not connect them with any thought of physical danger, any more than the beautiful bell-like creatures which had preceded them.  There was no more solidity in their frames than in the floating spume from a broken wave.

“But a more terrible experience was in store for me.  Floating downwards from a great height there came a purplish patch of vapour, small as I saw it first, but rapidly enlarging as it approached me, until it appeared to be hundreds of square feet in size.  Though fashioned of some transparent, jelly-like substance, it was none the less of much more definite outline and solid consistence than anything which I had seen before.  There were more traces, too, of a physical organization, especially two vast, shadowy, circular plates upon either side, which may have been eyes, and a perfectly solid white projection between them which was as curved and cruel as the beak of a vulture.