Note 49 — Chapter XLII · THE NECK.
Reading edition
This may afford an explanation of the unsatisfactory character of artificial foods, as well as of cows’ milk, since, unlike the babe, the calf is born with a functionating thyroid. Cows’ milk does not contain in this respect that which is found in human milk, all of which may afford a reason for adding minute amounts of thyroid extract for a short time to artificial foods for children.