1880, Alex. Napier, translator, A Handbook of Physical Diagnosis, translation of, 1877, Paul Guttmann, title, third German edition; New York: William Wood & Company, page 296,Normal urine is perfectly clear, containing neither crystalline nor any other organic figurate element, except possibly now and then traces of mucus.
1978, Lawrence Marvin Solomon, Nancy B. Esterly, and E. Dorinda Loeffel, Adolescent Dermatology, Saunders, ISBN 0721684920, page 414,Because large figurate lesions (cyclic, annular, or serpiginous) may exist...
