Comes now November with its bleak, brief days and the reminder that it's time to increase Little Son's summer quota of 1/3 teaspoonful cod-liver oil to a full teaspoon. Sunless days increase the need for Vitamin D, and vitamin in cod-liver oil has an effect similar to the action of sun's rays on a substance under the skin.
Lowenberg, Miriam E.
"Cod Liver Oil- Not a Medicine But a Food,"
Farm Science Reporter: Vol. 1
, Article 3.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol1/iss4/3