GSA Special Paper 449 (IMAGE) Geological Society of America Caption This is the cover of "The World in a Crucible: Laboratory Practice and Geological Theory at the Beginning of Geology," by Sally Newcomb. Credit Geological Society of America Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.