The past five years has seen a greater increase in knowledge of the pathologic changes of the spine than that of the half century preceding.
This is due to Professor Schmorl of the Dresden Pathologic Institute, who, in his researches up to now, did not achieve his object of demonstrating the cause of scoliosis but who indicated the anatomy, physiology and pathologic anatomy of that hitherto neglected organ the intervertebral disk.
Schmorl removes the spine at every autopsy and during the past five years has studied more than 5,000 spines. His investigations and observations are those of the pathologist.
A considerable literature has already sprung up in Germany as a result of Schmorl's work, while in this country it has received practically no attention. It was my privilege to spend a few days at Professor Schmorl's institute during the month of October, 1930.
The spine is an organ of many