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.
MCINTOSH BAT TEE Y AND OPTICAL CO., CHICAGO, ILL., U. S. A. 73 adjusted till they flow noiselessly, giving out a little red flame, and making the whole surface of the lime against which they are projected glow with an intense white light. Having secured a good illumina- tion, let the screen be blank and proceed to adjust the jet. Move it up and down until the light seems alike at the top and bottom, then forward and back until the whole disk is evenly illuminated. With these arrangements carefully made, the exhibition may proceed smoothly and without interruption, it being only necessary that the lime should be turned occasionally, and more gas turned on as the bags get lower. When the exhibition is over, turn off the oxygen at the jet, then the hydrogen at the jet, and immediately close both keys at the bags; detach the hose from the jet, and proceed to pack up. As soon as the bags are taken into the open air, the keys should be turned and any gas remaining allowed to escape. In cities and towns where house gas is used, it is not necessary to make hydrogen gas. The bag can be filled from a bracket, either at the place of exhibition or at home, before starting out. It will be found preferable to fill both bags beforehand, when the apparatus is to be taken short distances in a wagon or on the cars, rather than have the trouble of materials, retorts and gas-making at the place of exhibition. DIAGRAM OF DISSOLVING KEY AND SATURATOR. S, S, S, represent the three-tube Saturator. Ox, indicates the pipe leading to the oxygen reservoir. H, H, indicate the pipes conveying hydro- gen or ether vapor. 0, 0, those conveying oxygen. 1 and 2, the mixing chambers of the Lan- terns. C, C, Lantern keys. L, the lever which turns the lights off and on. To use this dissolver with oxy-hydro- gen disconnect the Saturator from H and 0, and connect the bags or cylinders with these points. It is important that the con- nections be made exactly as shown, for the construction of the mixing chambers is such that when the gases are reversed the light cannot work satisfactorily. As the lever L is turned to the right the light is turned on at Jet No. 2; if turned to the left, a slight blue flame remains at No. 2, and the full light appears at No. 1. The arrows mark the direction of the gases.