Thus in smallpox the motor energy must be equal to the force that would convey albumen through all tissues. Measles would be less, and so on according to the thickness of the fluids present. Thus you see the power to drive dead fluids from fascia must be much greater in smallpox than in cases of measles. Then we must see why the pulse of smallpox is so powerful during development of the pox. After killing the fluids by retention in the fascia of the skin, a greater force yet is created by hurting nerve fibers of fascia; then the motor energy appears and all the powers of life go to help the arteries force fluids through the skin and push to and leave them in the fascia of the skin to be eliminated as best it can. In some parts elimination fails, such places are called pox. They supurate and drop out leaving a pit (the pox mark). Now had the nerves of the skin and fascia not been irritated to contract the skin against the fascia passing its dead fluids through the excretory ducts of the skin, we probably would have no eruption. It is not quite reasonable to conclude that after the heart overloads the fascia and the nerves lose their control by pressure of fluids, that all that is left is chemical action to the production of pus, which throws it out of fascia in intervening spaces? Then should the fascia have greater death of its substances, we have one spot to run into others, and we have "confluent smallpox." CHAPTER XIII. A CHAPTER OF WONDERS AND SOME VALUABLE QUESTIONS. Wonders on the Increase--What Is Life?--How Is Action Produced--Acquaint Yourself With the Machinery--Duty of the Osteopath--Formation of Sacrum--The Pelvis--Appearance of OEdema--Do All Diseases Have Appearance in OEdema. WONDERS ON THE INCREASE.