Part One has three divisions

1. the preparatory fundamental analysis of Dasein;
2. Dasein and temporality;
3. time and Being.¹

[40] Part Two likewise has three divisions:¹

1. Kant's doctrine of schematism and time, as a preliminary stage in a problematic of Temporality;
2. the ontological foundation of Descartes' 'cogito sum', and how the medieval ontology has been taken over into the problematic of the 'res cogitans';
3. Aristotle's essay on time, as providing a way of discriminating the phenomenal basis and the limits of ancient ontology.

¹ Part Two and the third division of Part One have never appeared.

Being and Time (M&R) by Martin Heidegger