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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

Excerpt from Life Processes in Gray Norway Rats During Fourteen Years in CaptivityChanges in the weight of the body with age were determined for 1674 individuals from the fifteen generations covered by this report, approximately the same number of rats being taken from each generation. To facilitate an analysis of the findings, data for five successive generations were combined into the three groups given in reference tables 1 to 3.About the P...

Excerpt from Life Processes in Gray Norway Rats During Fourteen Years in CaptivityChanges in the weight of the body with age were determined for 1674 individuals from the fifteen generations covered by this report, approximately the same number of rats being taken from each generation. To facilitate an analysis of the findings, data for five successive generations were combined into the three groups given in reference tables 1 to 3.About the P...