2. Pituitary-- Gland of energy consumption and utilization--continued effort anterior Unknown Growth of skeleton and supporting tissues posterior Pituitrin Nerve cell and involuntary muscle cell, brain and sex tone 3. Adrenals The Gland of Combat cortex Unknown a. Brain growth--tone development of sex glands medulla Adrenalin b. Energy for emergency situations 4. Pineal Unknown a. Brain and sex development b. Adolescence and puberty c. Light and maturity 5. Thymus Unknown Gland of Childhood 6. Interstitial Testes in male Glands of secondary glands of Ovaries in female Sex traits 7. Parathyroids Unknown a. Controllers of lime metabolism b. Excitability of muscle and nerve 8. Pancreas Insuline Controller of sugar metabolism CHAPTER IV THE GLANDS AS AN INTERLOCKING DIRECTORATE Now in considering each gland of internal secretion as a separate entity, and labelling it with certain properties and actions, we of course commit the usual sin of the intellect: the sin of abstraction and isolation of its material. This crime of analysis the intellect commits every day in the search for truth. Before its dissection, it seems to have to dip the elusive article in a fixative, and bottle it in a vacuum. Yet nothing in reality is more of a changing flux than the body in all of its parts and tissues and organs. And of all these, the glands of internal secretion stand out as the most susceptible to change. Made to react to stimuli of offense and defense, instantaneously responsive to situations involving energy exchanges and protective reflexes, they are never for any minute the same or alone. They never function separately. Each influences the other in a communicating chain. Let one be disturbed, and all the others will feel the impact of the disturbance and vibrate with it.