Suppose we take a few diseases and submit them to the crucial ordeal of reason, and see if we do, or can find any one of the climatic fevers that appear with its full list of symptoms and have no assistance from an irritated diaphragm. For example take a case of common bilious fever of North America. It generally begins with a tired and sore feeling of limbs and muscles, pain in spine, head, and lumbar region. At this point of our inquiry we are left in an open sea of mystery and conjecture as to cause. One says, "malaria," and goes no farther, gives a name and stops. If you ask for the cause of such torturous pain in head and back, with fever and vomiting, he will tell you that the very best authorities agree that the cause is malaria, with its peculiar diagnostic tendency to affect the brain, spine and stomach, and administers quinine and leaves, thinking he has said and done all. Reason would lead seekers for cause of the pain above located to remember that all blood passes first as chyme up to heart and lungs, directly through the diaphragm, conducted through the thoracic duct, first to heart, thence to lungs, at the same time rivers of blood are pouring into the heart from all of the system. Much of it very impure, from diseased or stale blood. Much of the chyle is dead before it enters the great thoracic duct and goes to the lungs without enough pure blood to sustain life. Then disease appears. As a cut-off the diaphragm, when dropped front and down, and across the aorta and vena cava by a lowering of the ribs, on both sides of the spine; it would be a complete pressure over coelic axis, with liver supply, renal, pelvic, to a complete abdominal stoppage. Then we have over-due blood for other parts to send off dead corpuscles by asphyxia, with no hope that it can sustain life and health of the parts for which it was designed. Thus we know that nature would not be true to its own laws, if it would do good work with bad material. A DEMAND ON THE NERVES. Why not reason on the broad scale of known fact, and give the "why" he or she has complete prostration when all systems are wholly cut off from a chance to move and execute such duties as nature has allotted to them. Motor nerves must drive all substances to, and sensation must judge the supply and demand. Nutrition must be in action all the time and keep all parts well supplied or a failure is sure to appear. We must ever remember the demands of nature on the lymphatics, liver and kidneys, that nerves work all the time or a confusion for lack in their duties will mark a cripple in some function of life over which they preside. DANGER OF COMPRESSION.