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Scientific American, Vol. 71, No. 11 (1894) (1894)
leaf 8
ince the thermograph be built of very light paper as well as cloth, itisat home weighed 2 pounds, and- the least pull at a height of There are several obstacles to the use of kites which I found it necessary to overcome. First, the insta- in mild winds of from four to eight miles an hour. 1,400… … not measured, I have not so far in- fastened to E and D only, make a cluded it in my records of altitudes. right angle at E and an acute angle © 1894 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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