Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 127
he Household,published by The Macmillan Co. 124 GILBERT BOY ENGINEERING Spectacles. The eyes of short-sighted people focus the lightin front of the retina F, Fig. 191 A, and this difficulty is overcomeby spectacles with diverging lenses, L. The eyes of long-sighted people focus behind the retina… … Fig. 192. To make the bird enter the cage and this leads to the following apparent magic. Roll a piece ofpaper into a tube, hold it beside your hand, look at your handwith one eye and throughthe tube with the other. Do youappear to see through your hand? Look through other thingsin this way.…
Light · Scientific recreations
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The daily newspaper : the history of its production and distribution / [G.H.F.]. (1878)](https://img.insideoutlibrary.com/img/200/ia-dailynewspaperhi00ghf-18-10.webp)
