Nature, Volume 41

acid Algæ animals appear Astronomical atomic weights birds Botany British carbon cells centimetres character chemical chloroform colour comet contains crystals December December 12 described effect electric elements examination exhibited experiments fact feet fish fluorine galvanometer give given heat Horny Sponges hydrogen lines illustrated important increase India INSTITUTION interesting iron islands January lectures less lines London magnetic manganese masses matter ment metal meteorites method miles millimetres Museum natural natural selection November observations Observatory obtained occur ocean organism origin ovum paper Peltier effect period physical plants plates present probably produced Prof recent reference regard remarkable Report researches Royal Society scientific South species specimens spectrum stars steel substance surface temperature theory tion tube variation various volume W. H. Perkin wind