The Internet Archive has a preservation copy of this work in our general collections.
Trade Notes
1912
Scientific American
Preserved Fulltext
A METHOD has been described! for constructing a parabola as the envelope of the creases formed on folding a piece of paper in such manner that a fixed point always falls upon a fixed straight line.
doi:10.1038/scientificamerican02171912-112csupp
fatcat:kacsszrbqfedtnx7o3up3qzj2a