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Bergmann’s rule proposes that as latitude increases so will body size. This phenomenon is well documented in endotherms, particularly in mammals. There is also documentation that explains how this applies to ectotherms as well, however the authors of this study propose that those articles supporting the application of Bergmann’s rule to ectotherms are inconclusive and, in fact, reach false conclusions. The authors begin by addressing those articles written previously and explaining how they may have been flawed. The first of these articles, written in 1960 by Ray, uses laboratory procedures to explain how ectotherms raised in the la