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Inscribed in pen and brown ink, entire sheet: "Purple Lake -- for Purples which are made with Indigo or Prusssian | Blue & Lake, which last should most generally [...?sed] for very | distant Hills & mountains & to shade those that are nearer | & principally useful in making gray, & neutral teints - It | is Less liable to fade than brighter Lake | Prussian Blue -- for clear skies, can be used alone for | the blue of an Evening sky, but mixed with some Lake | for noon day skies, [...] the Drapery. must be rarely used | for making green in painting [trees?] | Indigo - For twilight & Evening, skies. For gray & neutral | teints which it forms better than P. Blue. Is very | useful for green when mixed with Gamboge & Burnt | Senna. Not to be used for clear sky but | mixed with Lake & Gamboge, is useful for the | greys of clouds. | Gamboge used in grass & trees when mixed with | Indigo & Bt. Senna. For greys & neutral teints when | used with Lake & Blue - but never to be used | in the yello