336 On the Climate, Diseases, Geology, &c. of Ohio. 
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rivers, and in our prairies; whereas in other years, these 
places are very healthy, and the sickness is confined to hilly 
regions. There has been a remarkable uniformity in these 
instances, and natural causes frequently operate on a large 
scale, much larger, many times, than we seem willing to ad- 
It. 
towns, has proved extremely prejudicial to health. Colum- 
bus, for instance, was a health 
water made it sickly during summer and autumn. 
peared to me to be desirable, that the water in it should have 
a trifli escent, say half an inch in a mile, so that, as m 
2. ATMOSPHERIC PHENOMENON. | 
Before a storm here, I have often noticed, in an evening 
of the latter part of autumn, and sometimes in the winter, 4 
that the common people believed there 
in the direction 
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