SCIENTIFIC PURSUITS AT HOME
"I am engaged on the subject which I intend for the last number of this year, and which I shall finish this week, namely, Polheimer's ideas upon the resistance of mediums, which at first were written down in Latin, and which have cost me a great deal of labor and mental exertion to reduce into such a form as will please the Assessor and the learned; likewise my method of finding the longitude of places, which I warrant to be certain and sure. I must hear what the learned say about it."
On the 4th of September he writes again to the same—
"I am very glad that Dædalus, part iii, has appeared. I thank you for having taken so much trouble and care with it: when I am present with you, I will thank you still more. I am already thinking of the contents of part v of the Dædalus. I think it will be best for me, first, to put down Assessor Polheimer's ingenious tap, with a sufficient mechanic and algebraic description; second, to make an addition to the description of his 'Blankstötz' machine, as this is a work which requires greater accuracy, reflection, and consideration than it has yet received; third, to leave
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