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Each species makes a characteristic growth on gelatin, agar or other media upon which it may be cultivated. In this way as well as by the inoculation of animals the presence of the ultramicroscopic kinds may be demonstrated. The method of reproduction is very simple. They increase to a certain point in size, then divide. This growth and division takes place very rapidly.
Considering what is implied by the human brain with its countless millions of cells, its complexities of minute structure, its innumerable chemical compositions, and the condensed forces in its microscopic and ultramicroscopic elements the whole a sort of microcosm of cosmic forces to which no conceivable compound of electric batteries is comparable; considering, again, that from an electric station waves of energy radiate through the viewless air to be caught up by a fit receiver a thousand miles distant, it is not inconceivable that the human brain may send off still more subtile waves to be accepted and interpreted by the fitly tuned receiving brain.
Acuteness of perception, memory, logical thought, imagination, conception, emotional expression or inhibition and the entire content of consciousness are influenced by the internal secretions. The most ultramicroscopic activities of the molecules and atoms in the highest nerve cells and nerve tissues are dominated.
"In fact," added the Professor, with what we thought a quiet note of warning in his voice, "I need hardly tell you that what we are dealing with must be regarded as altogether ultramicroscopic."
Horse-sickness takes ten short days to develop after infection, and the organism is so tiny that it passes through the finest filter and is ultramicroscopic. That means that it is too small to be recognised by the high power of an ordinary microscope. There was horse-sickness in the bush meadows beside the river near Kahe.
But the oval was not perfect; at my right a screen cut it a screen that gleamed with fugitive, fleeting luminescences stretching from the side of our standing place up to the tip of the chamber; slightly convex and crisscrossed by millions of fine lines like those upon a spectroscopic plate, but with this difference that within each line I sensed the presence of multitudes of finer lines, dwindling into infinitude, ultramicroscopic, traced by some instrument compared to whose delicacy our finest tool would be as a crowbar to the needle of a micrometer.
If the yellow fever parasite resembled that of the malarial fevers, it would no doubt have been discovered long ago. But, as a matter of fact, this parasite, which we now know is present in the blood of those sick with the disease, has thus far eluded all researches. Possibly it is ultramicroscopic. However this may be, it is not the only infectious disease germ which remains to be discovered.
We hastened to assure the Professor that, in accordance with the high standards of honour represented by our journal, we should of course regard anything that he might say as ultramicroscopic and treat it accordingly. "You say, then," we continued, "that the essence of the problem is the resolution of the atom. Do you think you can give us any idea of what the atom is?"
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