For the second edition I have only to remark that the name wrongly
written Hopkins in the French text (on page 45) has been replaced by the
correct name Hodgskin and that in the same place the date of the work of
William Thompson has been corrected to 1824. It is to be hoped that this
will appease the bibliographical conscience of Professor Anton Menger.

Frederick Engels

London, March 29, 1892