Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing the

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

Two new chapters on eneral Themodynamic Relations and Variable Specific Heat have been Added.The mistake which had crept in have been elinimated.we wish to expr