This is the source-bounded reading edition of the reconstructed lecture — the strictest of the project's editions: prose that stays within what the manuscript notes license. The left column is the ensemble-verified transcription of the sheets; the right column joins the notes into readable prose. Expansions of Stapledon's shorthand are silent, but every editorial addition — every connective sentence, every framing of a marginal note, every word without a note behind it — is tinted like this, and the scaffolding button hides or shows the tinting. Where you read the notes differently, the disagreement is with a visible editorial choice, not a hidden one. The editorial headnote below records the occasion and the manuscript's shape, with evidence classes stated; the fuller-voiced performing edition (v2) remains available.
The occasion is better evidenced than for most of the surviving note-sets: the first sheet carries, in Stapledon's own hand, "1·3·33 Birkenhead High School / 3·34 Quarry Bank Schl." — two school deliveries, on 1 March 1933 and in March 1934, the second dated to the month only. Both are sheet evidence, written on the manuscript itself; no external record of either occasion is held, and nothing on the sheets says how the talk differed between the two schools.
The manuscript (Liverpool University Library OS/F13/9) runs to eighteen sheets: a title sheet with a running order (in which "Moon" is entered and then struck), note sheets with substantial afterthoughts on the versos, an "Upshot" sheet whose page number and opening lines are in the manuscript's paler pencil, a one-sheet recapitulation of the whole talk, and a Martins Bank compliments slip that closes the folder as an archival object. Whether the paler-pencil layer belongs to the 1934 re-delivery the cover records is not known. Two readings remain disputed — a word on the Venus preparation sheet ("X rays", with "Xem" the recorded alternative) and a marginal phrase about Jovian natives — and they are quoted here with their uncertainty acknowledged rather than resolved.
The argument is a single sustained thought-experiment. A newspaper prediction of the earth's destruction three hundred years hence is imagined; the psychology of the response is sketched — thrilled at first, then "eat drink & be merry", then a gradual realization that "A great adventure must go on" — and the rest of the talk works out what acting on that duty would cost: ether ships, the dead Moon, molten Mercury, cloud-hidden Venus, cold and poverty-stricken Mars, the giant planets, and finally Haldane's question whether life needs planets at all.
In the corpus the talk matters as early evidence. The project's lecture concordance places its third sheet in three threads at once: the ladder "worm - monkey - man - superman", the "sacred duty to preserve mankind", and the hedonist shrug that the sceptic of Humanism and Superhumanism (South Place, 30 December 1934) will repeat. The concordance's synthesis reads such school and club talks as showing that the 1934 lecture "did not invent the position; it added the worship": here the futurist ethics stands complete, in a plain and almost cheerful register, with none of the numinous vocabulary. The planetary matter itself — settlers adapted to their worlds, "acclimatize babies", the ethics of colonisation — returns in the 1948 British Interplanetary Society lecture, with cautions this schoolroom version does not carry.
What is not known: how the talk was received; whether the sheets served further, unrecorded deliveries; which layer of the manuscript belongs to which school; and the sources of the astronomical figures. The three-hundred-year horizon, the telescope that "may tell much more", and the canals "very doubtful" are the notes' own hedges, and this edition keeps them.
The first sheet is the talk's cover: the title, a running order — earth's destruction predicted; how we should take it; travelling in space; Mercury; Venus (double-underlined); Mars; other planets; native life on Venus, Mars, Jupiter, Saturn, the Sun, the last three queried in the margin — with "Moon" entered and then struck, and, in Stapledon's own hand at the head, the two deliveries: "1·3·33 Birkenhead High School / 3·34 Quarry Bank Schl." A red "65" and a boxed "F65" are filing marks. The prose that follows keeps to what the notes license: editorial connective tissue is tinted like this, expansions of his shorthand are silent, struck words are not voiced, and the two disputed readings are quoted with their alternatives recorded rather than resolved.
The verso of the cover fixes the talk's one political premise: a disunited world — absorbed in war and trade. All the resources of the world would be needed. Mankind must unite.
Then the opening move: a prediction of the earth's destruction, imagined as a news heading: 300 years hence. The cause? Collision? Bursting? Moon fall? Not likely, but an exercise for imagination.
How mankind would take it: thrilled; then too remote to be taken seriously; eat, drink and be merry. A diagonal note in the margin answers the shrug: gradual realization.
Some would want man to continue. "A great adventure must go on." Man is only a million years old; his possible future — thousands of millions. He might become a much finer being: worm — monkey — man — superman. Hence a sacred duty to preserve mankind. Therefore find another world, and send a few men and women there; the rest must die. Gradually this view would become commoner.
How to set about the task? First, study the planets, with telescopes et cetera. Second, invent "ether" ships to take us away. Third, explore the possible planets, and choose which. Fourth, prepare mankind for its new home — and, a diagonal insertion adds, prepare it, the home, as well.
Travelling in space is not impossible, if we really wanted to. The vessel would work on the "rocket to the moon" principle — a huge ship, driven by explosive mixture, or by subatomic energy. Beyond the air there is no need of push, except for steering and stopping. There is the danger of meteors, and incandescence; the problem of air — compressed oxygen, liquid — and likewise of food and water, which the margin rates not serious. The voyage would be for months or years; hence heating and cooling machinery.
And the verso counts the cost: many experiments, and tragic failures — the ship might break; loss of air; collision; it might fail to return; cold; heat; steering failure.
The first ether voyage. Would it start with a bump? A contracting horizon — the aeroplane view. A circular earth, or gibbous, or crescent. The sky darkens — less air; stars and sun together. The earth shrinks; gravity weakens. Hence artificial gravity — magnetic boots.
The first journey is an approach to the moon — trial trip only. Circumnavigate it? Or land, but not go out, because there is no air.
The Moon is useless, save for metals and minerals: no air to breathe, no water; all rock, mountains. The loss of air explained: molecules jumping about very fast; the outside layer too jumpy for gravity — compare the soda water fizz. (A diagonal query beside the explanation: volcano?) The earth is strong enough to keep its air; but no small world is possible.
Could we give the Moon an atmosphere? Tranship air from the earth? It seems hopeless; and if we could, it would trickle away in a few thousand years.
Now a survey of the planets, according to present knowledge. The new 200-inch telescope may tell much more.
Mercury is useless: too small to have an atmosphere; it keeps one face to the sun (compare the moon). On the hot side — lead would melt; on the cold — extreme frost. (A diagonal query in the margin: on the limb?) Ether ships would melt en route; perhaps refrigerate them, for exploration.
Venus is roughly as big as the earth: an atmosphere, dense cloud — but no oxygen to breathe (free oxygen); therefore Venus is at present useless. Imagine the ether ship's hot voyage: sink through the cloud — onto what surface? Sea? Islands?
Then preparing Venus. First, exploration for settlement. Second, electrolysis stations. Third, plants from the earth — specially bred. Fourth, acclimatizing men to heat, "X rays" (a disputed reading — "Xem" is the recorded alternative), et cetera. Fifth, colonization — and most men would be left behind to die.
The food problem: no food there. Wait for terrestrial vegetation? (Not enough time?) But there is a wealth of sunlight above the clouds: synthetic food.
Then generations born on Venus. And the future? Class war? National war? Or a new start?
Why no free oxygen on Venus? Oxygen easily combines — too friendly; therefore don't expect oxygen. Then why oxygen on earth? Because plants keep pouring it into the air faster than it can combine, or than animals breathe it. Therefore no plants on Venus, and no animals — a dead world. Why did not life begin on it? Possibly there is some other sort of life, without oxygen.
Men would have to produce oxygen on Venus: either by splitting H₂O (electrolysis), or by introducing plants, or both. A bracketed cluster of questions, glossed climate? in the margin, asks: if the surface is all ocean? Islands? Storms, because Venus lies near the sun? A diagonal note beside them works the electrolysis out: hydrogen allowed to jump off; might return; explosions. And two last queries: a bright white sky? Native life?
A verso line, keyed by its circled mark into the oxygen argument, adds the inference that would run the other way — where free oxygen is found, therefore vegetation exists.
Mars: much smaller than the earth. It has an atmosphere, but not much — less than on top of Everest. It has oxygen, but only 15% of ours; it has water vapour, but very little. It is far from the sun, and very cold: on the equator at noon — a "cold bright day"; in winter — colder than the arctic.
We could not live there (in the open) — but might acclimatize babies? The policy: set up an ether-ship station (anchorage), and gradually produce a population.
What would the explorers find? Mostly desert — reddish sand or rock; probably large districts of "vegetation" (a diagonal marginal query: feathery?) — greenish in spring, brown in winter; polar caps, seasonal, and patches (the margin queries: CO₂?). The south cap vanishes in summer.
The verso asks: could Mars support much life? Water shortage; air shortage; biochemical shortage; light shortage.
Then the "canals of Mars" — straightish lines from the green parts. Lowell says: made by intelligent beings, to irrigate the desert? But all of this is very doubtful.
Explorers might be resisted — war! We have no idea what the Martians would be like: very different from us — Wells, the margin recalling his War of the Worlds. Men might be destroyed.
Even apart from resistance — many problems. Food in the new world: eat the Martian vegetables? They might poison us. Cultivate the earth's vegetables? Difficult to do so. Coal and oil? Burn Martian vegetables. No water power, no wind power; no seas to navigate. The verso presses the point again: food problem; light shortage.
Flying would be difficult in one way — the air is too thin to support planes; easy in another — gravity is slight. Athletics would be easy — jump like grasshoppers.
The asteroids: too small — a man might jump off. (10 miles — 500 miles.) No atmosphere; too cold.
Jupiter is very big, with strong gravity — we could hardly stand up. A diagonal marginal query asks after natives — "small, sluggish" (a disputed span; "small & sluggish" and "smaller sh. might" are the recorded alternatives). Atmosphere, clouds — oxygen? Cold; the Sun a mere star.
Saturn, worse — though there is the ring display, the moons. Uranus. Neptune — the Sun looks like a bright arc lamp. Pluto.
The "Upshot" sheet carries its own page number, and its opening lines, in the manuscript's paler pencil; whether that layer belongs to the 1934 re-delivery the cover records is not known.
The upshot of it all: we might colonize Venus and Mars — but with very different types of beings; anyhow we may explore them some day.
The old views: one, life is only possible here; two, a teeming universe. In fact, planets are rare. (The stars: sand on the British Isles 15 feet deep.) Planets: born every 200,000 years — a million or so, and few suited to life.
Stellar life — J. B. S. Haldane. In the interior of stars (suns)? A fiery brain? Or salamanders? And, standing as bare headings: Nebulae. Cosmos.
The last note sheet is a one-page recapitulation of the whole talk under its repeated title; the prose below keeps its telegraphic order.
The significance of the subject. The prediction of the earth's destruction — psychological effects. The problems of colonization. Ether ships: rocket principle, subatomic; air, food, water, heating, cooling; artificial gravitation; the first soaring — meteors.
The moon: no atmosphere (soda-water-fizz). Mercury: hot and cold sides; no atmosphere; molten lead. Venus: size; cloud; no free oxygen — no plants; sinking through the cloud, a hot, bright mist; ocean? no land? islands? storms; native life? attack by the natives?; introduce plants, electrolysis; acclimatizing men — that is, babies (and, diagonally in the margin: wealthy world).
Mars: oxygen 15% of ours; vegetation — feathery?; water vapour, but little; cold bright day; desert; polar caps — CO₂?; acclimatize babies; attack by the natives? — the Martian "clouds"; no water-power, wind-power, coal-power — a poverty-stricken world; easy athletics.
The asteroids. Jupiter: we could hardly stand up; oxygen?; natives must be minute; light shortage. Saturn and the rest: worse — in the margin, the lost tribe. (Another marginal item: planet formation.)
Life's prerequisites: temperature; energy flow; diversity of circumstances. And, bracketed at the foot: salamanders. Two companion lines — "minded stars" and "nebulae" — are struck through, and are not voiced here.
The final sheet carries no lecture text: it is a compliments slip — "With the Honorary Treasurers' Compliments. Martins Bank Limited, 7, Water Street, Liverpool." — bearing the Liverpool University Library archive stamp ("STAP.", "F13/9"): the manuscript's afterlife as an archival object (catalogue reference OS/F13/9).