Abstract
These books were dictated by Wittgenstein to pupils between 1933 and 1935, and present an earlier version of the ideas of the Philosophical Investigations. Wittgenstein's main concern is with problems of meaning, but this leads him to consider many connected problems, particularly in the philosophy of mind. Part of the interest of these books is historical, since manuscript copies of them helped to spread Wittgenstein's influence in the '30's and '40's; but they are also important philosophically, for they cast new light on the problems of the Investigations.--B. N. F.