Philosophical Transactions of the Royal Society of London

acid action angle animal appear ascertained axes axis become blood centre Clock Cloudy cluster colour compared considerable considered contained correct crystals deduced determined diameter direction distance divisions double effect elastic equal equation error examined experiments expression feet telescope Fine fixed force give given glass half heat Hence inches increase knife edges known latitude length less light lime manner MDCCCXVIII mean measure method minutes nature nearly object observations obtained parallax passing pendulum phenomena phosphorus pieces plane plate polarisation position present probably produced profundity quantity Rain reduced refraction remained remark represented respect rings scale seen separate side Society stars supposed surface taken Temp temperature thickness tints tion tube vapour vibrations weight whole