Heinrich Wilhelm Gottfried. 1836-1921 Brelau & Berlin anatomist; W.'s fascia = rectal fascia (1899); W.'s organ = paradidymis; W.'s ring = ring of lymphatic tissue at junction of oro- and nasopharynx (1884); W.'s tract = tract of spinal cord white matter; eyelid sweat glands; neuron doctrine = theory that each neuron was a separate entity without structural continuity at a synapse (1891).