I want to thank you, Mr. President, and the members of this Society for the privilege of appearing before you.

You are all familiar with the fact that headache, dizziness and mental disturbance occasionally persist for a long time after closed head injuries. These symptoms are usually grouped together under the title, “Postconcussional Syndrome“. The question whether or not there is an organic lesion at the root of this syndrome has engaged many minds for many moons. I think the majority of observers would agree with the text which I have taken for this discourse. You will find it in the tenth chapter of the last book of Mayer-Gross, Slater and Roth, page 408. There it is written, “Although predisposition and psychological factors would appear to play a predominant role in its causation, the probability is that some degree of organic change plays its part in most cases.”