From the unplumbed depths of new and startling fields of research a man, groping after the truth, contrived a group of life-forms of microscopic size. It was a daring experiment, made possible through the medium of advanced instruments and techniques which offered scope in the realms of micro-dissection. In that respect, then, the operation was successful: life-forms had been created by means of chromosomic manipulation. But the impact of the resulting entities was to have a disturbing effect on the man who made them...