. Discovery. Science. DISCOVERY A MONTHLY POPULAR JOURNAL OF KNOWLEDGE Vol. Ill, No. 28. APRIL 1922. PRICE Is. NET. DISCOVERY. A Monthly Popular Journal of Know- ledge. Edited by Edward Liveing, , Rothersthorpe, Northampton, to whom all Editorial Communications should be addressed. (Dr. A. S. Russell continues to act as Scientific Adviser.) Published by John Murray, 50A Albemarle Street, London, , to whom all Business Communications should be addressed. Advertisement Office: 34 Ludgate Chambers, 32 Ludgate Hill, London, Annual Subscription, 12s. M. post free ; single numbers, IS.


. Discovery. Science. DISCOVERY A MONTHLY POPULAR JOURNAL OF KNOWLEDGE Vol. Ill, No. 28. APRIL 1922. PRICE Is. NET. DISCOVERY. A Monthly Popular Journal of Know- ledge. Edited by Edward Liveing, , Rothersthorpe, Northampton, to whom all Editorial Communications should be addressed. (Dr. A. S. Russell continues to act as Scientific Adviser.) Published by John Murray, 50A Albemarle Street, London, , to whom all Business Communications should be addressed. Advertisement Office: 34 Ludgate Chambers, 32 Ludgate Hill, London, Annual Subscription, 12s. M. post free ; single numbers, IS. net ; postage, 2d. Binding cases for Vol. II, 1921, are now ready. Price IS. 6d. net each ; postage gd. Editorial Notes Fifty years ago Charles Darwin published a bDok called The Expression of the Emotions in Man and Animals. In many ways this book consolidated the foundations of the patient study, exp?rim:>nt, and re- search since bestowed upon the functions and nature of the ductless glands, or endocrine system, in the bodies of men and animals. In this direction remark- able discoveries have been made during the last h^lf- century by English, American, and German physio- logists, the results of which best known to the general public consist in the enormous relief afforded, by the feeing or injection of extract of the appropriate sheep glands, notably of the thyroid, to parsons suffering from insufficiency of secretions from such glands. During the last few years some of the most striking researches in this problem of physiology have been made by British doctors and scientists, such as Langdon Brown ^ and Swale Vincent,2 and in the field of experimentation with animals by Huxley and Hogben. Their work has shown the extreme complexity of the ductless glands in their relations with the rest of the human system, ' See The Sympathetic Nervous System in Disease, Chapter II, "The Sympathetic Nervous System in Relation, to the Endo- crine ; (Henry Frowde and Hod


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