Many of the doings of these small brothers of ours seem incomprehensible and unreasonable to us, but imagine that three thousand foot giant looking down upon the mites in France and Germany in 1870 without an inkling as to the Spanish succession; upon the recent incredible scufflings and passagings back and forth over the veldts of South Africa without being instructed as to the term of residence required to obtain the franchise. To his ignorant eye how purposeless, how amazingly futile the whole affair would have seemed. And it is thus we move, stupid and contemptuous, amid great races and events, heavily indifferent to their meaning, to their significance to ourselves. We walk surrounded by powers whose forces we ignore, who work out their ends independent of us, yet against whom we are sometimes forced to battle mightily for existence. To the unreflecting man in the street the cinch bug seems a matter of small interest. No one interviews the coddling moth to inquire his intentions. War correspondents pass by the locust and ignore the cotton worm; the fly weevil and the ox bot seem to such an one but a feeble folk, yet every year in the United States alone these small races cost us more than three hundred and fifty millions of dollars, destroy one tenth of our agricultural wealth, and are more expensive to us than was the yearly cost of the Boer war to England. We are the victims of pigmy captains of pernicious industries, beside whose gigantic operations such magnates as Carnegie or Mr. Morgan look--in the language of the streets--like thirty cents. Darwin discovered that human and plant life would perish from the face of the earth were it not for the labours of that humble annelid, commonly known as the angle worm, through whose body the entire superficial soil of the globe passes periodically, and by whose digestive processes it is made amenable for agriculture. The termites subserve the angle worm's efforts by turning over and aerating the soil to an extent very nearly incredible to those who have given no attention to their industry. Our very existence is made possible by the myriad beings for whom our bodies serve as homes and battlefields, and whose dimensions are so minute as to be invisible save under the most powerful microscopes. Ferocious struggles take place within our own tissues between the germs of disease and the white corpuscles of the blood, those brave and sleepless warriors who patrol our veins, and who die by thousands with unreflecting courage in combats with malignant bacteria. When their ranks are thinned, their columns crushed, we succumb helplessly to our invisible foes. How many of the great and good have fallen victims to those Brinvilliers of the swamps--the anopheles mosquitoes? And a greater number of the young flower of the armies of America and England were slaughtered by the enteric germs carried by flies than fell victims to Boer or Spanish bullets.