In this monograph the author takes up the subject of puerperal infection seriatim and places under one cover a complete summary of our present knowledge regarding it. After several puerperal infection as a wound infection is taken up exogenous, endogenous and metastatic infection is icluded hereas well as methods of bacteriologic examination for both aerobic and anaerobic organisms. The problem of bactoerial virulence and of resistance to infection is intimately discussed. The pathologic conditions arising from the various forms of infection are briefly classified. A consideration of treatement in its different phases completes the work.