Most Viewed

- Browns And The Cold Semi-neutral Grays Marrone Is Practically To
- Also Called Scarlet Chrome Is A Bright Chromate Of Lead Of An
- Black Chalk
- Composition Chemical Analysis Has Shown Several Of The Blues To Be
- Burnt Verdigris
- Belong The Dutch And Flemish Schools; The Sensible Which Aims At
- Less Known As English Red Prussian Red And Scarlet Ochre True
- Olive In Dark Green; Russet And Citrine In Dark Orange The
- Known Likewise As Raw Sienna Earth Terra Di Sienna &c Is A
- Root Of The Anchusa Tinctoria Commonly Known As Alkanet A Plant

Least Viewed

- Their Chief Source The Greens Consist Of Yellow Mixed With Copper
- Only That Of Extreme Light Objects Opaque It Follows That White Is To
- To Which The Various Appellations Have Been Given Of Thenard's Blue
- Thallium Orange
- Distilled Verdigris Or More Properly Refined Verdigris The Best Is
- Molybdenum Green
- Red And Blue In The Proportions Of Five Of The Former To Eight Of
- Violet De Mars Purple Ochre Or Mineral Purple Is A Dark Ochre
- Uniform Colour Thus Composed Is The Citrine Colour Of Fruit And
- Also In The Olive Foliage Of The Rose-tree Formed In The Individual

Egyptian Blue

called by Vitruvius, Coeruleum, is frequently found on the walls of
the temples in Egypt, as well as on the cases enclosing mummies. Count
Chaptal, who analysed some of it discovered in 1809 in a shop at
Pompeii, found that it was blue ashes, not prepared in the moist manner,
but by calcination. He considers it a kind of frit, of a semi-vitreous
nature; and this would appear to be the case from Sir H. Davy obtaining
a similar colour by exposing to a strong heat, for two hours, a mixture
of fifteen parts of carbonate of soda, twenty of powdered flints, and
three of copper. The colour is very brilliant when first made, and
retains its hue well in distemper and decorative painting; but it has
the common defect of copper blues of turning green in oil, when ground
impalpably for artistic use. One remarkable effect of this copper
smalt--for it is nothing else--is, that by lamp-light it shows somewhat
greenish, but shines by day with all the brightness of azure. Merimee
believes that Paul Veronese employed this sort of blue in many of his
pictures where the skies have become green.





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Previous: Blue Verditer

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