now see whether and how these requirements are compatible with those of science, natural science in particular. In proceeding to examine what laws science teaches us, and what truths it considers to be in- violable, our task will be simplified and our pur- pose fully served by keeping to the most exact of all natural sciences, physics, For this is the branch of science which by every logic could be expected to be the most likely to conflict with the demands of religion. Therefore, we are to inquire what kind of discoveries physical science has made up to our most recent days, and what limits these might set for religious faith, T hardly need to point out that viewed histori- cally and on the whole, the findings of physical research and the conclusions resulting from them do not exhibit a purposeless change, but have been steadily improving in precision and com- pleteness until the most recent days, some times at a faster at other times at a slower rate; and we therefore have every reason to regard the