"Make a small cross, of two light strips of cedar; the arms so long, as to reach the four corners of a large thin silk handkerchief, when extended: tie the corners of the handkerchief to the extremities of the cross; so you have the body of a kite..."

Love it.

Also, the first paper by Newton, on his new theory about light and colour. He was still just a "Mr."!

http://rstl.royalsocietypublishing.org/content/6/69-80/3075....