For example, when a solution of a ferric salt is added to a solution of potassium thiocyanate, a deep red coloration is produced, owing to the formation of ferric thiocyanate.
A portrait, painted in middle age, now in the church of Melhus, near Trondhjem, represents him in canonicals, with deep red beard and hair, the latter waved and silky, and a head of massive proportions.
The male of the cochineal insect is half the size of the female, and, unlike it, is devoid of nutritive apparatus; it has long white wings, and a body of a deep red colour, terminated by two diverging setae.
The lips are usually deep red and the teeth stained black from the habit of betel-chewing.
As the solution of potassium permanganate, which is deep red in colour, is dropped into the colourless iron solution, it is quickly decolorized while the iron solution gradually assumes a yellowish tinge, the first drop of the permanganate solution in excess giving it a pink tint.
Diphenylfulven, from benzophenone and cyclo-pentadiene, crystallizes in deep red prisms. Dimethylfulven is an orangecoloured oil which oxidizes rapidly on exposure.
On the summit of the falk there is generally a mound known as tas or barkhus composed of white sand which stands out conspicuously against the deep red of the surrounding deserts; the exterior slopes are comparatively gentle.
The Hindus are fond of painting the outside of their houses a deep red colour, and of covering the most conspicuous parts with pictures of flowers, men, women, bulls, elephants and gods and goddesses in all the many forms known in Hindu mythology.
They are stained deep red in dilute solution of alkanin.
The ribbon of the first order is deep red with white edging, of the second scarlet with white central stripe.