EMANUEL SWEDENBORG
"6. A draw-bridge which may be closed and opened within the gates and walls.
"7. New machines for condensing and exhausting air by means of water. Also a new pump acting by water and mercury, without any siphon; which presents more advantages and works more easily than the common pumps. I have also, besides these, other new plans for pumps.
"8. A new construction of air-guns, thousands of which may be discharged in a moment by means of one siphon.
"9. A universal musical instrument, by means of which one who is quite unacquainted with music may execute all kinds of airs that are marked on paper by notes.
"10. Sciagraphia universalis. The universal art of delineating shades, or a mechanical method of delineating engravings of any kind upon any surface by means of fire.
"11. A water-clock in which water serves the purpose of an index, and in which by the flow of water all the moveable bodies in the heavens are demonstrated, with other curious effects.
"12. A mechanical carriage containing all
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