In the eradication of smallpox, as in the near-elimination of polio, I find both fascinating lessons of history and enormous reason for hope.
The over-stocking of the ranges has caused much loss in the past, and the almost total eradication of fine native grasses over extended areas.
Augustine's (erroneous) interpretation of the Millennium (Rev. xx.), as a parable of the Church's historic triumph, stands for the final eradication of primitive " enthusiasm " in the great Church, though of course millenarianism has had many revivals in special circles.
It is not a man's duty, as a matter of course, to devote himself to the eradication of any, even the most enormous wrong; he may still properly have other concerns to engage him; but it is his duty, at least, to wash his hands of it, and, if he gives it no thought longer, not to give it practically his support.
The discovery of the parasite of malaria by Laveran, and of the method by which it gains entrance to the human body, through the bite of a particular variety of mosquito, by Manson and Ross, promises much in the way of eradication of the disease in the future.