Illustrated Catalogue Of Magic Lanterns (after November 1889, probably 1890)

MCINTOSH BATTERY AND OPTICAL CO., CHICAGO, ILL., U. S. A. 47 the subjects themselves. I am well pleased with the result. Our pupils in geography have gone with me on imaginary journeys to cities and bodies of water, about which they had studied in the text-book, and not only have they been delighted during the hour thus employed, but they have been better fitted for further study. The Stere- opticon has been found exceedingly help- ful also with classes in ancient and modern history, and in astronomy. The Solar Microscope I have found to be of especial benefit to our classes in physi- ology nnd zoology, because with it images of sections of animal tissue, mounted spe- cimens of insects and living animalcules can be thrown upon a screen, and shown at once to an entire class. If Boards of Edu- cation will purchase.this instrument, and it teachers will use it, I am sure that the money expended, and the necessary time employed, will not be wasted. L. T. REGAN, Sup’t Public Schools. From the Milwaukee Evening Wisconsin. Wonderful Exhibitions. Microscopic Illustrations by means of a Solar Instrument at this morning's session of the State Dental Society. The principal interest this forenoon cen- tered in the microscopic illustrations by Dr. L. D. McIntosh, of Chicago. They were exhibited by means of a solar microscope, and the exhibition was a rare treat. The best views were the showing of the circula- tion of blood in a pollywog, and the mus- cular contraction of a water mosquito. The exhibition was pronounced the most beautiful and perfect ever witnessed. The lenses magnified 700 diameters, and the blood could be plainly seen coursing through the venous and arterial system of the pollywog, displayed on a screen. The muscular contractions illustrated by the water mosquito were wonderful. The in- sect had been starved in clear water, and then was placed in turbid water under the glass. He at once commenced to feed in a manner that carried terror to the hearts of the animalculee, and also soon seemed to fill himself, for after springing upon a num- ber of germs, he quieted down, 1 he ex- pansions caused by breathing could be plainly seen, and the actions of his muscles when he sprang, cat-like, were wonderful to behold. From the Chicago Tribune. Seventh Annual Convention of the Western Academy of Homoeopathy. Dr. McIntosh entertained the academy with the exhibition of a solar microscope, operated on this occasion with an oxy-hy- drogen light. Numerous sections of the lining membranes of the internal organs were exhibited, and other portions of the minute anatomy shown, a most interesting feature of which was the admirable repre- sentation of the circulation of the blood in the capillaries. Several insects were thrown on the screen, and an idea of the high magnifying power of the instrument will be given by the fact that a bedbug appeared precisely six feet long, and the wing of a fly twenty feet. From American Journal of Microscopy. Illinois Microscopical Society. The annual meeting of the Illinois State Microscopical Society was held at the rooms of the Academy of Sciences, Chi- cago, April 22, 1881. The minutes of the revious meeting having been read, the ociety was then entertained by Dr. McIn- tosh, who exhibited a new and improved form of solar microscope, combining an oxy-hydrogen attachment. The histolo- gical slides shown by this apparatus were fine, and called forth very general admira- tion. From the Southern Clinic , Richmond. Report of American Medical Associ- ation and Exhibits. Dr. McIntosh, of Chicago, exhibits a line of Microscopes, Solar Microscopes, Stere- opticons, etc. This is an elegant dis- play, and Dr. McIntosh has given some beautiful exhibitions with his Solar Micros- cope, showing histological and patholo- gical specimens. From the Richmond Dispatch. Dr. L. D. McIntosh, of Chicago, 111., has on exhibition his Solar Microscope, a stere- opticon combination. This instrument can be used as a common microscope, or as a solar in combination with the stereopticon. The Doctor gave an exhibition last night of the Solar Microscope, with the aid of the oxy-hydrogen light at Exhibition Hall, which was largely attended by members of the association. From the Pioneer Press, Albert Lea. J teport of the TwdLftli Annual Meeting of the Minnesota State Medical Society. The State Medical Society opened its twelth annual meeting this morning. In the afternoon Dr. McIntosh gave a very in- teresting exhibition with his Solar Micros- cope, and exhibited many anatomical spe- cimens. From the Inter Ocean , Chicago. A Beautiful Piece of Scientific Me- chanism. Teachers, scholars and all lovers of scien- tific knowledge should not fail, when visiting the Exposition, to see the McIntosh Solar Microscope and Stereopticon Combi- nation. As a piece of mechanism, based on true scientific principles, it challenges the admiration of all thinking persons. Dr. McIntosh is to be congratulated upon the perfection of his instrument, and the hearty indorsement he is daily receiving for it from those who witness its wonderful workings.