l science teacher under the London Education Board, and, in his leisure, a specialist in fresh-water algae, and he is certainly not to be envied his discovery. He had come down to Keston Common for the day to fill a number of specimen tubes for subsequent examination, and he came, with a dozen or so of corked tubes clanking faintly in his pocket, over the sandy crest and down towards the pool, spiked walking stick in hand. A garden lad standing on the top of the kitchen steps clipping Doctor Winkles' hedge saw him in this unfrequented corner, and found him and his occupation sufficiently inexplicable and interesting to watch him pretty closely.
He saw Mr. Carrington stoop down by the side of the pool, with his hand against the old alder stem, and peer into the water, but of course he could not appreciate the surprise and pleasure with which Mr. Carrington beheld the big unfamiliar-looking blobs and threads of the algal scum at the bottom. There were no tadpoles visible--they had all been killed by that time--and it would seem Mr. Carrington saw nothing at all unusual except the excessive vegetation. He bared his arm to the elbow, leant forward, and dipped deep in pursuit of a specimen. His seeking hand went down. Instantly there flashed out of the cool shadow under the tree roots something--
Flash! It had buried its fangs deep into his arm--a bizarre shape it was, a foot long and more, brown and jointed like a scorpion.
Its ugly apparition and the sharp amazing painfulness of its bite were too much for Mr. Carrington's equilibrium. He felt himself going,
