PLATINUM s^USS, 



For all Labratory and Manufacturing Purposes. 



IB * SSo M 11 IT If © M 9 

 ISTo. 25 J3oiid Street, 1ST. Y. 



Scrap, Native Platinum, &c., Purchased. 



O. HEIDEMAN, 



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Superior work guaranteed at moderate prices. 



(Designs of every (Description executed at my Office by a 

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BEFEB.EH G.E! Us 



Smithsonian Institution, United States Army Medical Museum, 



Messrs Fauth & Co., Manufacturers of Astronom- 



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Washington, D. C 



Office : 609 Seventh Street Northwest, 



Washington, 1, (S, 



