In this revolutionary treatise, J W Armstrong puts the compelling case that all diseases (except those caused by traumatism or structural disorders) can be cured by one simple means: urine therapy. The therapy is an entirely natural treatment, a drugless system of healing that treats the body as a whole. Moreover, the only ingredient needed is a substance manufactured in the body itself, rich in mineral salts, hormones and other vital substances, namely human urine. It may seem strange to take back into the body something that the body is apparently discarding. Yet the theory is similar to the natural practice of organic composting. Fallen leaves, when dug back into the soil, provide valuable mineral salts to nourish new plant life. The same principle holds true for the human body.

Reprint of the original, first published in 1871.

Unlike many other art books only give recipes for mixing colors or describe step-by-step painting techniques, *Color and Light* answers the questions that realist painters continually ask, such as: "What happens with sky colors at sunset?", "How do colors change with distance?", and "What makes a form look three-dimensional?" Author James Gurney draws on his experience as a plain-air painter and science illustrator to share a wealth of information about the realist painter's most fundamental tools: color and light. He bridges the gap between abstract theory and practical knowledge for traditional and digital artists of all levels of experience.