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He crossed the western continent to observe the oldest of living things, the giant Sequoias of California. He went to Australasia and the Dutch East Indies and South America in search of new ferns and orchids. He investigated the effect of ocean currents and of tribal migrations in the distribution of trees.
But I started out to tell you about Muttra, which is a very ancient place. It is mentioned by Pliny, the Latin historian, Ptolemy, the Egyptian geographer, and other writers previous to the Christian era, and is associated with the earliest Aryan migrations. Here Krishna, the divine herdsman, was born.
Yet Doctor Unonius patiently tracked these creatures in their most distant migrations 'motus et migrationes diligentissime indagavit, says the mural tablet beneath the window. The three lights of the window represent Jonah vomited by the Whale, the Miraculous Draught of Fishes, and St Peter, John Dory and the stater.
And last of all, at the extreme rear of the column, came the herds, "rations on the hoof," a surging, bleating, bellowing mass of sheep and oxen, urged on by blows and raising clouds of dust, reminding one of the old warlike peoples of the East and their migrations.
When we can feel assured that all the individuals of the same species, and all the closely allied species of most genera, have, within a not very remote period descended from one parent, and have migrated from some one birth-place; and when we better know the many means of migration, then, by the light which geology now throws, and will continue to throw, on former changes of climate and of the level of the land, we shall surely be enabled to trace in an admirable manner the former migrations of the inhabitants of the whole world.
When we can feel assured that all the individuals of the same species, and all the closely allied species of most genera, have, within a not very remote period descended from one parent, and have migrated from some one birth-place; and when we better know the many means of migration, then, by the light which geology now throws, and will continue to throw, on former changes of climate and of the level of the land, we shall surely be enabled to trace in an admirable manner the former migrations of the inhabitants of the whole world.
The structure of animals, their colors, their ornaments, their distribution, their migrations, all have a significance that science may interpret for us if it can, but it is the business of every observer to report truthfully what he sees, and not to confound his facts with his theories. Why does the cowbird lay its egg in another bird's nest? Why are these parasitical birds found the world over?
Such migrations, sometimes by choice, more frequently from necessity, were common in the ancient world. Frequent necessities introduced a fashion, which subsisted after the original causes.
It is among the grey squirrels it takes place; hence the name given to that species, Sciurus migratorius. There is no regularity about these migrations, and their motive is not known. Immense bands of the squirrels are observed in a particular neighbourhood, proceeding through the woods or across tracts of open ground, all in one direction. Nothing stays their course.
The two essentials was the living voice of the graduate teacher and the concourse of students desirous to be taught. Hence migrations were common and stability only gradually established.
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