0-Naphthol, C 1 oH 7 OH, prepared by fusing sodium 0-naphthalene sulphonate with caustic soda, crystallizes in plates which melt at 122° C. With ferric chloride it gives a green colouration, and after a time a white flocculent precipitate of a dinaphthol.
In pleasing contrast to such pests are the butterflies of all sizes and colours, beetles of an inconceivable variety of size, shape and colouration, and ants of widely dissimilar appearance and habits.
I on Plate II.) Note - Of the two types of colouration found in modern domestic cats, the striped type obviously corresponds to the original wild cat as seen in various parts of North Europe to-day.
How would you define colouration? Add your definition here.