The first results of these metaphysical inquiries can be found in the five books of the manuscript «Notes towards a Metaphysic» (written from September 1933 till May 1934), in which he makes an endeavor to construct a cosmological - metaphysical
system of his own, 5 following the example of Whitehead's and Alexander's description of reality as a process, but based on his method
elaborated in An Essay on
Philosophical Method, 6 and in «Sketch of a Cosmological Theory,» the first (never published) cosmology conclusion to The Idea of Nature.