THE SEVENTH
Cincinnati
Industrial
Exposition
Opens for the reception of goods August 20th.
Opens to the public September 10th, and continues open until October 11th, in the
NEW PERMANENT BUILDINGS
ERECTED FOR THE PURPOSE.
Machinery Tested and Fully Reported upon.
Send for Rules and Premium Lists after April 1.
H. McCOLLUM, Sec'y.
THE FORSTER-FIRMIN GOLD AND SILVER AMALGAMATING COMP'Y of Norristown, Pa., will grant state rights or licenses or easy terms. This system works up to assay, and recovers the mercury rapidly. Apply as above.
THOMAS'S CONCENTRATED DYE
Stuffs. (138 Recipes SENT GRATIS.) (See Scientific American Supplement, March 15, '79.) Address
N. SPENCER THOMAS, Elmira, N. Y.
