The boiler generates high pressure steam by transfering the heat of Combustion in various heat transfer sections. This part of the article series briefly describes the flow and arrangement of the heat transfer sections in a boiler. In line diagrams help make the concept clear.
Abnormalities found within vertebral bones are called transitional vertebrae. The spinal cord runs through the middle of the human spine. Chiropractic manipulation may help treat problems caused by misaligned vertebrae. The tailbone, or coccyx, is the lowest segment of the spinal column.
Creationists like to claim that there are no such transitional forms in the fossil record, but in the case of prehistoric snakes they're dead wrong: paleontologists have identified no less than four separate genera, dating back to the Cretaceous period, that were equipped with stubby, vestigial hind legs.