There is no author's introduction to Phenomenology and the Foundations of the Sciences,! either as published here in the first English translation or in the standard German edition, because its proper introduction is its companion volume: General Introduction to Pure Phenomenology. 2 The latter is the first book of Edmund Husserl's larger work: Ideas Toward a Pure Phenomenology and Phenomenological Philosophy, and is commonly referred to as Ideas I (or Ideen 1). The former is commonly called Ideen III. Between these two parts of the whole stands a third: Phenomeno 3 logical Investigations of Constitution, generally known as Ideen II. In this introduction the Roman numeral designations will be used, as well as the abbreviation PFS for the translation at hand. In many translation projects there is an initial problem of establish ing the text to be translated. That problem confronts translators of the books of Husserl's Ideas in different ways. The Ideas was written in 1912, during Husserl's years in Gottingen (1901-1916). Books I and II were extensively revised over nearly two decades and the changes were incorporated by the editors into the texts of the Husserliana editions of 1950 and 1952 respectively. Manuscripts of the various reworkings of the texts are preserved in the Husserl Archives, but for those unable to work there the only one directly available for Ideen II is the reconstructed one.

Inhalt
One: The Different Regions of Reality.- §1. Material thing, material perception, material natural science (physics)..- §2. Animate organism, apprehension of animate organism, and somatology..- §3. The delimitation of somatology and psychology..- §4. Communities as seen by natural science..- Two: The Relations between Psychology and Phenomenology.- §5. The relationship of phenomenology to the sciences..- §6. The ontological foundation of the empirical sciences..- §7. Regional concepts and generic concepts..- §8. Rational psychology and phenomenology experimental psychology..- §9. The significance of phenomenological description for the realm of experience..- §10. Relation of phenomenology to the writings of Bolzano, Lotze, and Brentano..- §11. Differences in the relations of physics and psychology to their ontological foundations. The significance of description in both sciences..- §12. Further clarification of the relationship of rational psychology and phenomenology..- Three: The Relationship of Phenomenology and Ontology.- §13. The field of phenomenological research..- §14. Inclusion of the ontologies in phenomenology..- §15. The significance of ontological findings for phenomenology and the difference of attitude in the two sciences..- §16. Noema and essence..- §17. Significance of ontological concepts for psychology..- Four: The Method of Clarification.- §18. The dogmatic sciences' need for clarification..- §19. Clarification of the conceptual material..- §20. Making distinct and making clear..- Supplements.- Text-Critical Notes on the Supplements.- Supplement I: Transition from Book II to Book III.- §1. The constitution of the psyche. (Empathy.).- §2. Realizing apprehension of the pure Ego..- §3. First indication of thenecessary distinction of natural-scientific and cultural-scientific attitude..- §4. The connection of psyche and animate organism..- §5. Solipsistic and intersubjective experience..- §6. Significance of the problem of constitution; phenomenology and ontology..- Supplement II, to p. 9. Personal Ego and Animate Organism..- Supplement III, to p. 15. Identity of the Physical Thing and Identity of the Psyche..- Supplement IV, to §79. Type Empirical Classification..