REFERENCES:
• The Castel of Health by Sir Thomas Elyot
(1490?-1546)
PDF: http://resource.nlm.nih.gov/2234010R
Text: https://name.umdl.umich.edu/A21308.0001.001
• The Optick Glasse of Humors by Thomas Walkington
(-1621.)
PDF: http://resource.nlm.nih.gov/2426021R
Text: https://name.umdl.umich.edu/A14665.0001.001
• The Castel of Health by Sir Thomas Elyot
(1490?-1546)
PDF: http://resource.nlm.nih.gov/2234010R
Text: https://name.umdl.umich.edu/A21308.0001.001
• The Optick Glasse of Humors by Thomas Walkington
(-1621.)
PDF: http://resource.nlm.nih.gov/2426021R
Text: https://name.umdl.umich.edu/A14665.0001.001