Nature, Volume 85

amount animals appears ball become body British carried cause changes coal collection College committee complete connection consider considerable contains course dealing December described determined direction discussion effect electric evidence examination existence experiments fact further given gives groups heat illustrated important increase Institute interest knowledge known laboratory less light lines London matter means measures ment method Museum natural November object observations obtained occur origin period physical plants Pleistocene position possible practical present Price probably problem produced Prof published question radiation recent record reference regard relation Royal scientific Society South species stars suggested surface taken temperature theory tion University various volume whole