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CONTENTS OF VOL XXXI
Sir David Brewster on the Bands formed by the Superposition
Mr J Croll on the Excentricity of the Earths Orbit
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according acid action amount angle appears atmosphere atoms attraction axis bands become body bright calculated carbon cause cent centre circle colour compared condition considerable considered constant contains corresponding currents curve described determined direction distance earth effect electric equal equation exist experiments expressed fact focus force four give given glass greater heat Hence inch increase intensity invisible known less light lines mass matter maximum means measured method motion observations obtained occur origin pass period portion position possible present pressure probably produced proved quantity question radiation rays reasoning reference regarded remarkable represented resistance respect seen shown side solar solid solution spectra spectrum sphere stars supposed surface Table taken temperature theory tion unit vapour visible wire