This work on temperature in disease laid the foundation of modern knowledge regarding clinical thermometry. Wunderlich reportedly took over a million measurements from 25,000 people. Temperatures ranged from 97.2 to 99.5, and the mean normal human body temperature was 98.6. Wunderlich also established 100.4 degrees as “probably febrile.” Garrison said of Wunderlich that he “found fever a disease and left it a symptom.” The New Sydenham Society published an English translation, On the temperature in diseases: A manual of medical mhermometry, in 1871.