connects it to a summary of a particular disease. This allowed doctors to have a quick reference guide to twenty different types of urine. Temperature The temperature at which the urine is examined is a very important factor to consider in the process of uroscopy. When a patient urinates, the urine will be warm, so it is necessary for it to stay warm for proper evaluation. The external temperature should be the same as the internal temperature. When the temperature of urine goes down the bubbles in it will change. Some of them will disappear, but some will remain. With the temperature decrease, particles and impurities will be more difficult to evaluate. They will move toward the middle of the flask, then sink to the bottom. They will all mix, making it more difficult to see the impurities. Another problem with urine cooling is that it would become thicker. The longer that it had to cool down the more likely it was that the crystals in it would bond together, causing it to thicken. This could lead to a false diagnosis, that is why doctors usually inspected the urine quickly. Richard Bright in the 19th century invented a technique that allowed doctors to examine a patients urine effectively after the temperature had dropped. The process involved heating water, then inserting the uroscopy flask containing cooled urine. This would heat the urine causing the crystals that formed during loss of temperature to break down. As a result, the urine will become thin again. This process is very effective, but a doctor should "also be careful not to shake them much before you inspect them for you will move the particles and destroy the bubbles and dilute the deposits and confuse the situation," (The Late Greco-Roman and Byzantine Contribution to the Evolution of Laboratory Examinations of Bodily Excrement. Part1: Urine, Sperm, Menses and Stools, Pavlos C. Goudas). Lighting Since identifying the color of the urine is essential for a proper diagnosis, the lighting is crucial. This is a very complicated step in the uroscopy test. The doctor must not visually examine the urine in an overly lit location, because it will make the urine seem too bright. He can not examine the urine in a poorly lit location, because he will not be able to properly see the urine. So, he must examine the urine in both conditions. This is done to