When the next great ice-cap shall sweep down from the north pole upon these beautiful alpine flowers they will have to travel somewhere. There is manifestly as much necessity for them to get out of the way as for the rest of the flora. How will they manage to get down the mountains into the lowlands, and traverse uncongenial plains and deserts, to find other and far-distant alpine homes? They can never, of course, get very far away from the regions skirted by eternal frost, for their cup of joy must be chaliced by the snow-flake, or their beautiful life is soon ended. But if all our alpine flora have traveled from one evolutional centre, or have been "created but once in time and place," how have they managed to cross the thermal equator and spread themselves out over all the alpine regions of the globe? We call upon Mr. Darwin and Professor Gray to rise and explain. Not that we want any explanation, but that their theory of plant-migration stands sadly in need of one. The theory which the Bible genesis suggests to us is fully adequate to the explanation wanted. It explains not only _why_ these alpine flora appear where they do, but why they cannot appear anywhere else. It also explains all the physiological facts to which we have referred in the foregoing chapters. Wherever the necessary alpine conditions exist the earth responds to the divine command, and the beautiful little alpine harebell is cradled into life, and rejoices in the bright embroidery it wears. And so, wherever streams are turned aside to flow through new meads and sheltered woods, or over broken and swaly places where cowslips never grew before, hardly a year will pass before this "wan flower" will hang therein "its pensive head," while all along the line of the stream the black alder will make its appearance in the lowlands, no matter how far its current may be diverted from its original channel, or how distant the supply of natural seeds. For nature's sternest painter can only delineate her as "instinct with music and _the vital spark_."