I N T R O D U C T O R Y N O T E B Y
P R O F E S S O R F R E U D

These Chapters constitute an instructive (L e h r r e i c h)
and valuable introduction to the science of Psycho-
analysis which is so difficult to present.

F R E U D .

V I E N N A 2 . 4 . 1 9 3 3 .