DEAR SIR,

James Strachey, you and your readers may be interested to know, furnished his essay, 'The Nature of the Therapeutic Action of Psycho-Analysis', 'with additions and corrections by the author', when I asked to reprint it in my Psychoanalytic Clinical Interpretation (New York: The Free Press; London: Collier-Macmillan, 1963).

Mr Strachey was meticulous. 'Happening the other day to cast a look at the reprint', he wrote to me in longhand, as were all his letters to me, '… I noticed what is a rather unfortunate misprint … owing to what philologists call a "haplography" a line of copy was omitted. On page 11, line 19 [of the reprint], after "ego" should come "also terminates and the original super-ego".'

Yours faithfully,