We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
The Stereopticons, & Lanterns arc priced without any reference to Slides whatever' That is, the prices are for the Stereopticons and Lanterns complete and ready for use, with Lamps and necessary appendages, but without any Views. OXY-HYDROGEN STEREOPTICON. The Oxy-Hydrogen or Drummond Light, is the invention of the late Prof. Robt. Haiie, M.D. of the University of Pennsylvania, and is produced by the ignition of lime in a compound flame of Oxygen and Hydrogen Gases. The light thus obtained is the most intense, as yet discovered, that can be practically applied, and is at the same time easily and economically procured ; the entire expense of making the Gases for an evening's exhibition, with either of the following Oxy-Hydrogen Stereopticons, being under One Dollar, even at the present high price of chem- icals. J8S" The Oxy-Hydrogen apparatus, as heretofore made, has not been free from danger, and accidents have occurred. I have recently introduced several improve- ments in the arrangements of the apparatus, by which all danger is removed, and the greatest amount of light obtained with absolute safety to the operator. No. 400. Oxy-Hydrogen or Drummond Light Stereopticon, for Dissolving Views, with Improved arrangement for producing the dissolving effect. The cases of finely-finished and well-seasoned mahogany, on raised Walnut Platform. Con- densing Lenses 4|- inches diameter. First quality Achromatic Combination Magnifying Lenses, a f t ° P° wers > with Bras9 Ra ° k work adjustment for focussing. Fin quality Oxy Hydrogen batety Jets tipped with Platina. McAllister's new Slide Spring and Sto Retort, Purifier, and largest size India Rubber Gas Bag, for the Oxygen. Copper Generator nd largest size Gas Bag for the Hydrogen. . This instrument is made throughout in the very best manner, adapte 1 for use in the largest Mails and will magnify the Stereoscopic Views on Glass up to 25 feet square (625 sauare feot), with fine definition and powerful light. Securely packed in strong boxes, with hinged lid, lock and key and handles $350 00