Nature, Volume 59

acid amount appears Association become body British carried cause changes character chemical chemistry collection College complete connection considerable considered containing corresponding course described determined direction effect electric examination existence experiments fact field force further give given illustrated important increase Institute interesting Italy known less light London magnetic matter means measure meeting method natural November object observations Observatory obtained organic origin passed period physical plants plates position possible practical present probably produced Prof published question received recent recorded reference regard relation remarkable Royal schools scientific seems seen similar Society South species stars success taken temperature theory tion University various volume whole