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

Colour

Other things being equal, those artificial ultramarines are most durable
which possess the most colour; and all are, perhaps, most permanent in
water. If used in that vehicle, care should be taken to employ a gum
free from acid; also, whether in water or oil, not to compound the blue
with a pigment which may possibly contain acid, such as constant white.
Acid, as we have said, is the great test for ultramarine; whence if a
sample be sophisticated with cobalt, its blue colour will not be
entirely destroyed. With high-class artistic pigments, however,
adulteration is the exception and not the rule. It is as a powder-blue
for the washtub that ultramarine gets disguised, when it is ground up
with soda-ash, chalk, gypsum, &c., and sold sometimes under its own
name, but more frequently as superfine Saxon smalts.

TTITLE BRILLIANT ULTRAMARINE,





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