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upon Illinois, within the only future that practically concerns us. 

 But it was demonstrated before, that this insect could not pass into 

 Illinois in the same mode as the Colorado potato-bug has done, 

 namely, by breeding at various way-stations on the road. Therefore, 

 as there are but two conceivable modes by which the Hateful Grass- 

 hopper can reach Illinois, namely, 1st, at a single flight, or 2d, by 

 breeding on the road, and as it has been shown that both modes are 

 utterly improbable in the case of this species for hundreds of years 

 to come, it necessarily follows that, in all human probability, it will 

 not pass into Illinois at all for hundreds of years to come. 



Every man — except, perhaps, some crazy Millerite — bel levies 

 firmly that, in all human probability, the sun will rise in Illinois 

 every morning for hundreds of years to come. Yet he has no better 

 kind of evidence to justify such a belief, than I have to justify the 

 truth of my theory, namely, that, in all human probability, we shall 

 never for hundreds of years to come, be afflicted with the Hateful 

 Grasshopper in Illinois. Both the inorganic and the organic worlds 

 are governed by certain fixed laws; and whether it be a vast fiery 

 globe of liquid lava revolving slowly upon its axis in the midst of 

 the attendant worlds, that have been circling around it, each in its 

 own peculiarly prescribed path, for indefinite ages; or whether it be 

 some infinitesimally minute insect winging its way from the alpine 

 heights of the Eocky Mountains over the Desert Plains of the West; 

 we have but to ascertain by what laws each of them is governed, in 

 order to be able to predict, in the case of each of them, what is, and 

 what is not, morally certain to happen in the future. 



THE END. 



