PARENTAGE AND EARLY LIFE
sorts of works which arc set in motion by the movement of the horses. Also a flying carriage, or the possibility of remaining suspended in the air, and of being conveyed through it.
"13. A method of ascertaining the desires and the affections of the minds of men by analysis.
"14. New methods of constructing cords and springs, with their properties.
"These are my mechanical inventions which were heretofore lying scattered on pieces of paper, but nearly all of which are now brought into order so that when opportunity offers they may be published. To all these there is added an algebraic and a numeric calculation from which the proportions, motion, times, and all the properties which they ought to possess are deduced. Moreover, all those things which I have in analysis and astronomy require each its own place and its own time. O how I wish, my beloved friend and brother, that I could submit all these to your own eyes and to those of Professor Elfvius! But as I cannot show you the actual machines, I will at least in a short time forward you the drawings, with which I am daily occupied. I have now time also
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