— —, at various places in Ohio and Michigan, E. Loomis, xxxviii, 397.
— —, — ibid, at Cincinnati, J. Locke, xl, 56.
— —, at Philadelphia and Baltimore, A. D. Bache, xl, 375.
— —, at Baltimore, J. Locke and J. N. Nicollet, xlii, 239.
— —, at Nantucket, W. Mitchell, xlvi, 157.
— —, daily variation in, Kupffer, xxv, 194.
— — and intensity determined by one instrument, H. Lloyd, xxxviii, 179.
— discoveries by H. H. Sherwood, xxxiv, 210.
— effects from Hare's calorimotor, G. T. Bowen, v, 357.
— experiments, showing the effect of cold and heat on steel bars, Kupffer, xxv, 194.