Dr. Curschmann has written the chapters on the thyroid, parathyroid, the hypophysis and the suprarenals, and Dr. Prange has written the chapter or section on diseases of the ovaries and testis. The authors succeeded best in the description and classification of the syndromes related to hyperactivity and hypoactivity on the various endocrine glands. They were more unfortunate in the theoretical part of the work. There is a brief introduction of less than five pages which contains an amazing assortment of dogmatic assertions, theories and questionable facts, as shown by the following quotations:
"It seems to be established that none of the hormones partake of the chemical nature of proteins." We have rather clear evidence that the thyroid hormone as it leaves the thyroid gland is a protein or at least in combination with the protein thyroglobulin.
The following statement is certainly questionable: "Disturbances due to malfunction of single endocrine glands