Part IX - On the similarity of empirical and verbal structures...........................................72635. Action by contact................................................................................72736. On the semantics of the Einstein theory..........................................................73837. On the notion of 'simultaneity'..................................................................74938. On the 'world' of Minkowski......................................................................75539. General reflections on the Einstein theory.......................................................763Part X - On the structure of 'matter'....................................................................77240. The older 'matter'...............................................................................77341. The newer 'matter'...............................................................................786A. Introductory..................................................................................788B. The nature of the problem.....................................................................790C. Matrices......................................................................................793D. The operator calculus.........................................................................799E. The new quantum mechanics.....................................................................802F. The wave mechanism............................................................................808G. Structural aspects of the new theories........................................................812Supplement I - The Logic of Relativity.......................................................................817Supplement II - The Theory of Types..........................................................................825Supplement III - A Non-Aristotelian System And Its Necessity For Rigour In Mathematics And Physics...........835Notes And References.........................................................................................850Bibliography.................................................................................................853Catalog......................................................................................................868Index........................................................................................................876