ult of along experience one kind of work to another. It is provided with an shallow internal groove, which fits over a corresponding circumferential rib on the lens cell. This split ring has a with lanterns of various kinds. It is believed that it oxyhydrogen burner and with an electric lamp,… … To prevent the escape of stray light a wire frame is slide holder. ->^jV attached to the body of the lantern, so as to support a The attachments shown in Fig. 2 are Fig. 2.-MICR0SC0PE ATTACHMENT. black cloth canopy, which covers the entire front of employed for the projection of micro- the lantern…
Patents · Adapted · Engine · Scientific American · Munn · Express money · Steam navigation · Electric energy · Rolling bridges · American supplement · Piston rod · Steam engine · Van depoele · Stationary engine
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-165-43.webp)
