This little book, Epitomes of Three Sciences gives an account of the recent work done in three different fields of modern knowledge; viz., Comparative Philology, Experimental Psychology, and Old Testament History. These three sciences have an almost direct bearing upon the religious views of our time, in spite of their difference of subject and the divergence of their authors' standpoints. It intended to explain in a few words the relation in which Comparative Philology, Experimental Psychology, and Biblical History stand to one another. This book is PDF version of original  book of these authors: H. Oldenberg, J.Jastrow and C.H. Cornhill.