. e shall be 9 followed by an article on Photography in Colors, giving leased to furnish any desired information on applica- DRYING AND VENTILATING FANS, some formule, by Mr. E. Vallot, for the production of WOOL AND COTTON DRYERS, Etc. oa JOHN T. FIELD & CO. photographs in colors. With one figure.… … the country. jects. Catalogues on application. Part 1 Optical, 2 shifting belts. Power applied can given, covering a vast amount of valuable infor- athematical, 38 Meteorological, 4 Magic J.anterns, etc. H be graduated to drive with equal mation. 5 L. MANASSE, 8S Madison Street, Chicago, III.…
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