If this man had enjoyed the opportunities he would have had but for his mother's death, he might have been one of the greatest naturalists that ever lived. Nature had given him every requisite: a frame of iron, Scotch endurance, a poet's enthusiasm, the instinct of not believing anything in science till he was _sure_ of it, till he had put it to the test of repeated observation and experiment. Although a great reader, he derived most of his knowledge directly from nature's self. He began by merely picking up shells, as a child picks them up, because they were pretty; until, while still a lad, he had a very complete collection all nicely arranged in a cabinet and labeled. Youth being past, the shy and lonely young man began to study botany, which he pursued until he had seen and felt everything that grew in Caithness. Next he studied insects, and studied with such zeal that in nine months he had collected, of beetles alone, two hundred and fifty-six specimens. There are still in the Thurso museum two hundred and twenty varieties of bees, and two hundred and forty kinds of butterflies, collected by him. Early in life he was powerfully attracted to astronomy, and read everything he could find upon the subject. But he was one of those students whom books alone can never satisfy; and as a telescope was very far beyond his means he was obliged to devote himself to subjects more within his own reach. He contrived out of his small savings to buy a good microscope, and found it indispensable. Geology was the subject which occupied him longest and absorbed him most. He pursued it with untiring and intelligent devotion for thirty years. He found the books full of mistakes, because, as he said, so many geologists study nature from a gig and are afraid to get a little mud on their trousers. "When," said he, "I want to know what a rock is, I go to it; I hammer it; I dissect it. I then know what it really is.... The science of geology! No, no; we must just work patiently on, _collect facts_, and in course of time geology may develop into a science." I suppose there never was a man whose love of knowledge was more disinterested. He used to send curious specimens to Hugh Miller, editor of "The Witness" as well as a geologist, and Mr. Miller would acknowledge the gifts in his paper; but Robert Dick entreated him not to do so. "I am a quiet creature," he wrote, "and do not like to see myself in print at all. So leave it to be understood who found the old bones, and let them guess who can." As long as he was in unimpaired health he continued this way of life cheerfully enough, refusing all offers of assistance. His brother-in-law once proposed to send him a present of whiskey. "No," said he in reply, "spirits never enter this house save when I cannot help it." His brother-in-law next offered to send him some money. He answered:--