Nature

absorption acid Agriculture annual appears appointed Arthur Smith Woodward Association atom awarded bands Britain British carbon cent Chemical chemistry chlorocruorin chromosomes coal colour connexion crystal December E. J. Holmyard edition Education effect ELECTRICAL ENGINEERS electron energy expedition experimental experiments February fossils Geological given heat helium hydrogen important industry INSTITUTION interest investigation January January 16 January 20 June 12 Laboratory larvæ Lecture light lines London magnetic manganese measurements medal ment mercury metals method molecules Museum NATURE nitrogen observations obtained optical origin paper period photographic physical plants plates Polyploidy porphyrin possible present pressure problem production Prof radiation recent Report rotatory Royal Society School scientific Section solution South species spectra spectrum star structure sunspots Suppt surface temperature theory tion University College University of London vapour variations wave-length X-ray