plate 24 In my former letter I called attention to the fact that the but they are destitute of cohesion. The distinctions made be- inches in diameter we drill the following circles: 126 158 188 220 tween the different kinds of attraction were probably not made 128 160 190 222 so hastily as the… … Providence, R. I. ——$—$——————— idea from Mr. Delamater’s letter, I will state that it was my Sun Power, Etc, oO intention to have suggested in my present letter the concen- Poison of the Locust, tration of the solar heat itself, but he has spared me the ne- Messrs. Eprtors:—In No. 11, current…
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