1. The screw consists of an axis of hollow brass tube, 18 inches in length, through which, upon a semi-spiral inclined at 15 degrees, pass a series of steel-wire radii, 2 feet long, and thus projecting a foot on either side. These radii are connected at the outer extremities by 2 bands of flattened wire; the whole in this manner forming the framework of the screw, which is completed by a covering of oiled silk cut into gores, and tightened so as to present a tolerably uniform surface. At each end of its axis this screw is supported by pillars of hollow brass tube descending from the hoop. In the lower ends of these tubes are holes in which the pivots of the axis revolve. From the end of the axis which is next the car, proceeds a shaft of steel, connecting the screw with the pinion of a piece of spring machinery fixed in the car. By the operation of this spring, the screw is made to revolve with great rapidity, communicating a progressive motion to the whole. By means of the rudder, the machine was readily turned in any direction. (Tornar al text)
2. The mails from the South last Saturday night not having brought a confirmation of the arrival of the Balloon from England, the particulars of which from our correspondent we detailed in our Extra, we are inclined to believe that the intelligence is erroneous. The description of the Balloon and the voyage was written with a minuteness and scientific ability calculated to obtain credit everywhere, and was read with great pleasure and satisfaction. We by no means think such a project impossible. (Tornar al text)
3. I then took opportunities of conveying by night, to a retired situation east of Rotterdam, five iron-bound casks, to contain about fifty gallons each, and one of a larger size; six tin tubes, three inches in diameter, properly shaped, and ten feet in length; a quantity of a particular metallic substance, or semi-metal, which I shall not name, and a dozen demijohns of a very common acid. The gas to be formed from these latter materials is a gas never yet generated by any other person than myself – or at least never applied to any similar purpose. I can only venture to say here, that it is a constituent of azote, so long considered irreducible, and that its density is about 37.4 times less than that of hydrogen. (Tornar al text)
4. Nota del traductor: Trad. de Xavier Benguerel. 1982, El corb i altres poemes. Edicions del Mall. Barcelona. (Tornar al text)
5. The skies they were ashen and sober;/ The leaves they were crisped and sere -/
The leaves they were withering and sere;/ It was night in the lonesome October [...]
And now, as the night was senescent/ And star-dials pointed to morn -/
As the star-dials hinted of morn -/ At the end of our path a liquescent/ And nebulous lustre was born,/ Out of which a miraculous crescent/ Arose with a duplicate horn -/ Astarte’s bediamonded crescent/ Distinct with its duplicate horn.
And I said: «She is warmer than Dian;/ She rolls through an ether of sighs -/ She revels in a region of sighs:/ She has seen that the tears are not dry on/ These cheeks, where the worm never dies,/ And has come past the stars of the Lion.
To point us the path to the skies -/ To the Lethean peace of the skies -/ Come up, in despite of the Lion,/ To shine on us with her bright eyes -/ Come up through the lair of the Lion,/ With love in her luminous eyes. (Tornar al text)
6. It cannot be maintained that by the crawling system, exclusively adopted, men would arrive at the maximum amount of truth, even in any long series of ages; for the repression of imagination was an evil not to be counterbalanced even by absolute certainty in the snail processes. (Tornar al text)
7. Were the succession of stars endless, then the background of the sky would present us a uniform luminosity, like that displayed by the Galaxy – since there could be absolutely no point, in all that background, at which would not exist a star. The only mode, therefore, in which, under such a state of affairs, we could comprehend the voids which our telescopes find in innumerable directions, would be by supposing the distance of the invisible background so immense that no ray from it has yet been able to reach us at all. (Tornar al text)
8. I must die. I have no desire to live since I have done Eureka! I could accomplish nothing more. (Tornar al text)
9. Eureka! is not a work of dotage or disordered mind. It is, I think, the work of a man trying to reconcile the science of his estafe with the more philosophical and spiritual cravings of the mind. Poe, besides being fairly well-informed in science and mathematics, seems to have had the mind of a mathematician. (Tornar al text)
10. Eine schöne Leistung eines ungewöhnlich selbständigen Geistes. (Tornar al text)
Beaver, H. (ed.), 1976. The Science Fiction of Edgar Allan Poe. Penguin Books. Harmondsworth.
Mabbott, T. O., 2000. Edgar Allan Poe, Tales & Sketches. University of Illinois Press. Chicago.
Poe, E. A., 2009. The Complete Works of Edgar Allan Poe. Cosimo. Nova York.
Quinn, A. H. i S. Rosenheim, 1998 . Edgar Allan Poe: A Critical Biography. Johns Hopkins UP. Baltimore.
Shaw, R., 1988. The Ragged Astronauts. Baen. Nova York.
Vincelette, E., 2008. «Beauty, Truth and the World: the Prophecy and Theology of Poe's "Eureka"». E. A. Poe Review, IX(2): 36-54.
Walsh, L., 2006. Sins Against Science: the Scientific Media Hoaxes of Poe, Twain, and Others. State University of New York. Albany.