#electroplating bath #materials recipe: 5% vinegar, 3% hydrogen peroxide, mixed half and half, heated in the microwave until it steams, used to oxidize a copper scouring pad to copper acetate, but don’t let the solution get too concentrated, and apply a minimum of ½V. #electrolysis #bootstrapping
#ebook from 01915 with hundreds of line-drawing illustrations of different #USA butterfly and moth species as well as a few other insects. An easy read, waxes lyrical about the nature of existence and describes how to make a cyanide bottle in between lots of sexist and racist stuff. There’s a 14-megabyte PDF.
#ebook from the late 16th century: “Eight miniature paintings of common fruits, flowers, butterflies and other insects, on gold grounds within brown and gold borders framed in black. Paintings are on facing leaves.” Beautiful.
#ebook from 01898 with 48 colored plates of butterflies and 183 excellent illustrations. There’s a very nice plate of monarchs and kin on the 132nd page (between p. 80 and p. 81).
#ebook from 01925 of colored plates of butterfly decorative art and patterns