The Popular recreator. A key to in-door and out-door amusements .. (1873)
London, New York [etc.] Cassell, Petter & Galpin · leaf 417
o as totake the form shown in Fig. 8. In the Figure the paper is lefta little open, that you may see exactly what is meant; it shouldhowever, in reality, be pressed quite flat. Take the corners, aand b, and make them meet at e. Turn the paper over andmake the corners c and d also meet at the point… … a thin plate of lead or brass. Bore a hole in it with a fine awl ora large needle. Let a drop of clear water fall into the hole so asto fill it up completely. Now place any minute object you wishto examine below the thin plate; look through the globule ofwater, and you will see it magnified a…
Amusements · Games · Sports
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Perspectiva; hierinnen auffs kürtzte beschrieben, mit Exempeln eröffnet vnd an Tag gegeben wird, ein newer besonder kurtzer, doch gerechter vnnd sehr leichter Weg, wie allerley Ding, es seyen Corpora, Gebew, oder was möglich zuerdencken vnd in Grund zulegen ist, verruckt oder vnuerruckt, frener in die Perspectyf gebracht werden mag, on einige vergebliche Linie, riss vñ Puncten, [et]c. dergleichen Weg bisshero noch nit bekant gewesen (1571)](https://img.insideoutlibrary.com/img/200/ia-perspectivahieri00lenc-17-14.webp)
