Various, Chambers's Journal of Popular Literature… (1853)
“ And thus the plant-nature of the ‘snow-blossom’ was finally settled.The red-snow alga found on the Alps, Pyrenees, and Carpathians, and also on the summits of the North American mountains as far down as California, is not, however, such a determined enemy to heat as its having its home in the ice-region would imply. In the arctic circle, as well as on our own mountains of perpetual snow, especially on Monte Rosa, the red snow is seen in summer like a light rose-coloured film, which gradually deepens in colour, particularly in the track of human footsteps, till at length it turns almost black. ”
