Nature, Količina 93

absolute magnitudes acid æther appears April atomic atomic weight balloon British cent chemical chemistry classes College colour committee contains density described direction discussion edition effect electric electrons Engineering experiments fact Funafuti Geological giant stars given gives Hermann et Fils illustrated important increase industry Institute interesting investigation J. J. Thomson laboratory large number larvæ lectures lines London magnetic magnitude March matter means measures ment metals Meteorological method metric system mineral motion Museum National Physical Laboratory NATURE observations Observatory obtained origin paper parallax period photographs physical plants plates present Price problems produced Prof published radiation radium recent region rocks Royal Society schools scientific solar species spectra spectral classes spectrum stars surface temperature theory tion tube University various velocity volume W. H. Bragg