An advertisement in which E. D. Barlow, Zincographer and Lithographer, Engraver and Copperplate Printer of 3-4 Colonnade, Bridge Street Sydney cautions the public: 'Whereas, Raphael Clint, of George street, continuing to advertize Zincography, this is to give notice to those Gentlemen and the Public generally who may have been misled by his deceptive Advertisements, that Raphael Clint cannot work Drawings or writings, not having the means or being acquainted with the Secrets of the said Art; and secondly, HE DARE NOT, as the Patent for executing Drawings, &c. &c. upon Zinc, in this Colony and Van Diemen's Land, belongs exclusively to me, which Patent I have registered in the Supreme Court, and may be viewed by any Gentleman on application.'
