But it may fairly be asked,--What, after all, do these figures mean?--They are, indeed, so large as to exceed comprehension; for, after certain comparatively narrow limits are passed the practical infinite is approached, and the mere adding of a few more ciphers after a numeral conveys no new idea. On the contrary, the piling up of figures rather tends to weaken than to strengthen a statement, for to many it suggests an idea of ridiculous exaggeration. Indeed, when a few years ago a somewhat similar statement to that just made was advanced in an official report, a critic undertook to expose the fallacy of it in the columns of a daily paper by referring to a case within the writer's own observation in which a family of three persons had been killed on their very first journey in a railroad car. It is not, of course, necessary to waste time over such a criticism as this. Railroad accidents continually take place, and in consequence of them people are killed and injured, and of these there may well be some who are then making their first journey by rail; but in estimating the dangers of railroad traveling the much larger number who are not killed or injured at all must likewise be taken into consideration. Any person as he may be reading this page in a railroad car may be killed or injured through some accident, even while his eye is glancing over the figures which show how infinitesimal his danger is; but the chances are none the less as a million to one that any particular reader will go down to his grave uninjured by any accident on the rail, unless it be occasioned by his or her own carelessness.