TECHNOLOGY; OR, CHEMISTRY 
AS APPLIED TO THE ARTS AND TO MANUFACTURES. 
BY F. KNAPP. 
TRANSLATED AND EDITED BY 
DR. EDMUND RONALDS, AND DR. THOMAS RICHARDSON, 
[oF NEWCASTLE. ] 
[LECTURER ON CHEMISTRY AT THE MIDDLESEX HOSPITAL] 
REVISED, WITH AMERICAN ADDITIONS, BY 
PROFESSOR WALTER R. JOHNSON, OF PHILADELPHIA. 
WITH NUMEROUS BEAUTIFUL WOOD-CUTS. 
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SPECIMENS OF THE WOOD ENGRAVINGS. 
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To be followed by works on Pharmacy, Chemistry, Astronomy, Heat, waist 
draulics, Metallurgy, Pathological Anatomy, Rural Economy, &c. 
