Philosophy of science is a branch of philosophy. It attempts to elucidate the nature of scientific inquiry—observational procedures, patterns of argument, methods of representation and calculation, metaphysical presuppositions—and evaluate the grounds of their validity from the points of view of epistemology, formal logic, scientific method, and metaphysics.
Historically, it has had two main preoccupations, ontological and epistemological. The ontological preoccupations ask what kinds of entities can properly figure in scientific theories and what sort of existence such entities possess. Epistemological preoccupation, is concerned with the concepts and methods employed in studying natural phenomena and explaining their natural causes.
( http://www.britannica.com/EBchecked/topic/528804/philosophy-of-science )
Essays from Galiliean Library
Philosophy of Science - Course Home Page of Prof David Banach
Philosophy of Science: A Very Short Introduction
(Interesting book. It is a book in the series of short books published by Oxford.)
Models and Methods in Philosophy of Science: Selected Essays
Springer, 1999, Mathematics
Google Book Link with Preview facility
A Recent Article
How Science Works III - The Philosophy of Science
First published in