James A. Landau forwarded a puzzling question from an other list, about what a "portagraion"could be.
> Stephen Greenleaf, Mathematical Instrument-Maker...;Makes and mends > all Sorts of Mathematical Instruments, as Theodolites, Spirit Levels, > Semicircles, Circumferences, and Protractors, Horizontal and > Equinoctal [sic] Sun Dials, Asimuth and Amplitude Compasses, > Elliptical and Triangular Compasses, and all Sorts of common > Compasses, drawing Pens and Portagraions...; with sundry other > Articles too tedious to mention.
Apparently, it is quoted from an old catalogue of instruments, and it comes just after "drawing Pens". My suggestion is "portagraion" could mean "Porte-crayon", that is a box to keep various pens. Have a amused look at