Have the Pleasure to Announce that by Their System of Grinding Colours by Machinery : They are Enabled to Supply Artists' Colours in Oil, Water, Or Powder, Perfectly Fine, at the Same Prices Hitherto Charged for Colours Less Finely Ground. : Messrs. G.R. & Co. Feel Assured the Oil Colours Ground by Their Improved Process Will be Found to be Finer, Brighter, Less Oily, and to Dry Quicker Than Any Others at Present Manufactured ; and that Their Water Colours Prepared by the Same Process, Will Prove to be Finer, Brighter, and to Float More Evenly Without Granulation Than Any Other Colours Hitherto Produced. : They Therefore Solicit a Trial in Full Confidence of Giving Satisfaction