[6] CELSUS, _De Medicina_, translated by W. G. Spencer (Cambridge: Harvard University Press, 1960), volume 1, book 2, page 155. [7] HENRY E. SIGERIST, _A History of Medicine_ (New York: Oxford University Press, 1961), volume II, pages 317-335. [8] GREEN, op. cit. [note 4], page 105. [9] PETER H. NIEBYL, "Galen, Van Helmont and Blood Letting," (chapter 21 in volume 2 of _Science, Medicine and Society in the Renaissance_ edited by Allen Debus, New York: Science History Publications, 1972); PETER NIEBYL, "Venesection and the Concept of the Foreign Body: A Historical Study in the Therapeutic Consequences of Humoral and Traumatic Consequences of Diseases" (doctoral dissertation, Yale University, 1969), page 156. [10] GREEN, op. cit. [note 4], page 171. [11] Ibid., page 114. [12] Ibid., page 173. [13] Ibid., pages 174, 180. [14] CELSUS, op. cit. [note 6], page 163. [15] CHARLES H. TALBOT, _Medicine in Medieval England_ (London: Oldbourne, 1967), pages 127-131. [16] CHARLES D. O'MALLEY, _Andreas Vesalius of Brussels 1514-1564_ (Berkeley and Los Angeles: University of California Press, 1964), pages 66-67. [17] See, for example, M. DAVID, _Recherches sur la maniere d'agir de la saignee et sur les effets qu'elle produit relativement a la partie ou on la fait_ (Paris, 1762), page iv. [18] LORENZ HEISTER, _Chirurgie, in welcher alles, was zur wund artzney gehoeret ..._ (Nuremberg, 1719). [19] GREEN, op. cit. [note 4], page 179. [20] JOSEPH T. SMITH, SR., "An Historical Sketch of Bloodletting," _Johns Hopkins Hospital Bulletin_, volume 21 (1910), page 312. [21] MARSHALL HALL, _Observations on Bloodletting Founded upon Researches on the Morbid and Curative Effects of Loss of Blood_ (London, 1836), page 280. [22] ROBLEY DUNGLISON, _Medical Lexicon--A Dictionary of Medical Science_ (Philadelphia, 1848), page 820. [23] JAMES E. BOWMAN, "Blood," _Encyclopaedia Britannica_ (Chicago: William Benton, 1972), volume 34, pages 795-800. [24] GREEN, op. cit. [note 4], page 187. [25] KARL SUDHOFF, _Deutsche medizinische Inkunabeln_ (Leipzig, 1908); Studien zur Geschichte der Medizin heft 2/3. SIR WILLIAM OSLER, _Incunabula Medica: A Study of the Earliest Printed Medical Books, 1467-1480_ (Oxford: Oxford University Press, 1923). [26] FRANCISCO GUERRA, "Medical Almanacs of the American Colonial Period," _Journal of the History of Medicine and Allied Sciences_, volume 16 (1961), pages 235-237. The number of veins illustrated in the vein man varied a great deal but became fewer after the seventeenth century. [27] TALBOT, op. cit. [note 15], pages 127-131. [28] GUERRA, op. cit. [note 26], pages 237; MARION BARBER STOWELL, _Early American Almanacs: The Colonial Weekday Bible_ (New York: Burt Franklin, 1977). The latter work contains numerous illustrations of "anatomies" from colonial almanacs. [29] "Original Letters," General William F. Gordon to Thomas Walker Gilmar, 11 December 1832, _William and Mary Quarterly_, volume 21 (July 1912), page 67.