In a previous communication, it was stated that the pituitary gland secretion has a selective action on mesenchymal tissues (1). The suprarenal cortex as a mesenchymal tissue is influenced by the state of the pituitary gland. In this communication it will be shown that the suprarenal cortex secretion has a selective action on mesothelial tissues. From the mesothelium are derived the following tissues
1. Striated muscle, (a) Skeletal. (b) Cardiac.
2. Sex glands, ovary, testis, etc.
6. Serous layer of intestines.
A differentiation of the mesoderm into mesenchyme and mesothelium is not agreed to