A developing thing may expand in any given way or form.

Now, it is a scientific law that increase implies gain and loss of various kinds; what a thing gains in one direction it may lose in another.

May it not be that Mother Nature may deliberately encourage decrease as well as increase--that it may be an axiom that what is gained in concentration is lost in size?
Take, for instance, monsters that tradition has accepted and localised, such as the Worm of Lambton or that of Spindleston Heugh.

If such a creature were, by its own process of metabolism, to change much of its bulk for intellectual growth, we should at once arrive at a new class of creature--more dangerous, perhaps, than the world has ever had any experience of--a force which can think, which has no soul and no morals, and therefore no acceptance of responsibility.
A snake would be a good illustration of this, for it is cold-blooded, and therefore removed from the temptations which often weaken or restrict warm-blooded creatures.

If, for instance, the Worm of Lambton--if such ever existed--were guided to its own ends by an organised intelligence capable of expansion, what form of creature could we imagine which would equal it in potentialities of evil?
Why, such a being would devastate a whole country.