It is soluble in carbon bisulphide, and is decomposed by water and also by heat, in the latter case yielding the tetraiodide and the di-iodide, Si 2 I 4, an orange-coloured solid which is not soluble in carbon bisulphide.
The antheridia are spherical orange-coloured bodies of very complex structure.
It is readily recognized by the yellow or orange-coloured spots which are placed in a row along the dorsal and anal fins, and scattered over the body.
In due time the fungus, known as Aecidium Berberidis, appears on the barberry leaves in the form of small cluster-cups on aecidia, each of which is filled with chains of orange-coloured aecidiospores.
Another member of the family is Eschscholtzia californica, a native of western North America, and well-known in gardens, with orange-coloured flowers and a long two-valved fruit pod.
They are about the size of a pigeon, with orange-coloured plumage, a pronounced crest, and orange-red flesh, and build their nests on rock.
It is an orange-coloured gas which may be readily liquefied and by further cooling may be solidified.