first. It does dissolve his flesh, but then it alters and re-forms both body and soul. There are now two selves, which share memory, but nothing else except the house keys. Jekyll’s potion-induced second self, Hyde, is morally worse but physically stronger, with more pronounced ‘instincts’. As this is a post-Darwinian fable, he is also hairier.
Dr Jekyll is then betrayed by the very scientific method he has relied upon. Time after time, the mixing up of the potion and the drinking of it produce the same results; so far, so good-and-bad. But then the original supply of chemicals runs out, and the new batch doesn’t work. The boundary-dissolving element is missing, and Dr Jekyll is fatally trapped inside his furry, low-browed, murderous double. There were earlier ‘sinister double’ stories, but this one – to my knowledge – is the first in which the doubling is produced by a ‘scientific’ chemical catalyst. As with much else, this kind of transmutation has become a much-used comic book and filmic device. (The Hulk, for instance – the raging, berserk alter ego of reserved physicist Bruce Banner – came by his greenness and bulkiness through exposure to the rays from a ‘gamma bomb’ trial supervised by Dr Banner himself.)
Next in the line comes H.G. Wells’ 1896 Dr Moreau – he of the Island, upon which he attempts, through cruel vivisection experiments, to sculpt animals into people, with appalling and eventually lethal results. Moreau has lost the well-meaning but misguided quality of the projectors: he’s possessed by a ‘passion for research’ that exists for its own sake, simply to satisfy Moreau’s own desire to explore the secrets of physiology. Like Frankenstein, he plays God – creating new beings – but like Frankenstein, the results are monstrous. And like so many of the sinister scientists who come after him, he is ‘irresponsible, so utterly careless! His curiosity, his mad, aimless investigations, drove him on …’
From Moreau, it’s a short step to the Golden Age of mad scientists, who became so numerous in both fiction and film by the mid-twentieth century that everyone recognised the stereotype as soon as it made its appearance.
Its lowest point is reached, quite possibly, in the B-movie called variously
The Head That Wouldn’t Die
or
The Brain That Wouldn’t Die.
The scientist in it is even more seriously depraved than usual. The head in question is that of his girlfriend; it comes off in a car accident, after which incident most men might have cried. But the mad scientist is building a Frankenstein monster out of body parts filched from a hospital, underestimating as usual the monster’s clothing size – why do those monsters’ sleeves always end halfway down their arms? – so he wraps the girl’s head in his coat and scampers off with it across the fields. Once under a glass bell with wires attached to its neck and its hair in a Bride of Frankenstein frizzle, the head gives itself to thoughts of revenge while the scientist himself haunts strip clubs in search of the perfect body to attach to it.
There’s another element in Book Three of
Gulliver’s Travels
that bears mention here because it so often gets mixed into the alchemist/mad scientist sorts of tales: the theme of immortality. On the island of Luggnagg, the third in Swift’s trio of capital-L islands, Gulliver encounters the immortals – children born with a spot on their foreheads that means they will never die. At first, Gulliver longs to meet these ‘Struldbrugs’, whom he pictures as blessed: surely they will be repositories of knowledge and wisdom. But he soon finds that they are on the contrary cursed, because, like their mythological forebears Tithonus and the Sibyl of Cumae, they do not receive eternal youth along with their eternal life. They simply live on and on, becoming older and older, and also ‘opinionated, peevish, covetous, morose, vain … and dead to all natural affection’. Far