how many mouths he looks in that have properly developed dental arches. Our children are being fed food so poor in minerals that the average kid?s jaw cannot fully fill out. That is why wisdom teeth have to be removed. That is why so many kids are in braces. Take that knowledge and start studying the faces of the kids you see on the street. The mouth is only a window into the body. Those thin faces; with poorly formed mouth arches; with crowded teeth trying to push past one another; are accompanied by fragile, low-density, bones. Our race is in danger of dying out. High quality food is not important only because it tastes better...it is vital for us to survive. Read Dr. Weston Price's Nutrition and Physical Degeneration . It is a timeless message that will shock you. A refractometer is an optical device that takes advantage of the fact that light passing through a liquid bends or refracts. Thicker, i.e., more dense, liquids refract more. Solids dissolved in a liquid will cause it to exhibit a refractive index in direct relation to the amount of solids. A refractometer substitutes a calibrated prism and an etched screen for the liquid. Refraction is extremely exact and no modern chemist wishes to be without a refractometer. Table model refraction measuring devices date back to the 1600?s. Although lost to antiquity, it appears that some scientist, or perhaps artisan, developed a workable portable model sometime in the latter 1800?s. By the