Little Masterpieces of Science:

It is an adventure book. Peace hath her victories No less renown than war. II The love of adventure, the expectation of the unexpected, have ever prompted men stout of heart, and ready of resource, to brave the perils of wilderness and sea that they might set their feet where man never trod before. The world owes much to the explorers who have faced hostile savages, stood in jeopardy from the cobra and the lion, the foes as deadly which lurk in the brook which quenches thirst. A traveller like Clarke takes his life in his hands. He breaks a path which leads he knows not whither: it may bring him to a shore whence he has no ship to sail from; it may end in an abyss he cannot bridge. The thickets rend and sting him, poison may colour a tempting grain or berry, frost may deaden his energies and lull him to the sleep that knows no waking. He has but little aid from science: beyond food and medicine he carries little more than a watch, a compass, a rifle, and a cartridge belt. Beyond all instruments and weapons are his skill, agility, gumption, diplomacy.