1. De venarum osteolis;Fabricius,1933
2. “The Society of Chymical Physitians” by Sir Henry omas, in Science, Medicine and History, essays on the evolution of scientific thought and medical practice written in honour of Charles Singer. E. Ashworth Underwood. Volume 2, p. 56.
3. William Cheselden;Hauksbee,1953
4. History of Medicine;Garrison's,1917
5. Stephen Hales,1929