Nature, Volume 79

amount animals appears Association British carried cause changes chapter character collection College connection considerable contains continuous course dealing December described direction discussion effect electric engineering evidence examination existence experiments fact field further give given illustrated important increase Institute interest knowledge known less light lines London material matter means measured meeting ment method nature North November observations obtained origin passed period physical plants plates position possible practical present pressure Price probably problems produced Prof published question rays received recent recorded reference regard relation remarkable Royal schools scientific Society South species suggested taken temperature theory tion University various volume whole