It seems necessary to say a few words in regard to the communication which we published in yesterday's is sue concerning 'Darwin and the Origin of Species." After inquiring carefully into the matter, we find the following to be the facts of the case. One of our professors who is thoroughly acquainted with his subject, made some statements in regard to Darwin and his theory, which, in the hurry of note-taking, were misinterpreted by our first correspondent. These mistakes were printed in our first article, where upon our second correspondent, who, it would seem, is conversant in scientific affairs, sent us a long communication in regard to the misstatements of his predecessor. These corrections were perfectly correct and justifiable, but there is a question about the propriety of his intimating that the lecturer was "sadly in error." The latter is thus brought into a controversy in which he takes no interest and which is wholly out of his province The remarks which he made in the philosophy course from which our first correspondent derived his "facts," were based on the highest authority, such as the journal of the Linnean Society and the proof-sheets of "The Autobiography of Darwin," the latter of which having been kindly loaned him by Dr. Gray. The subject of the relation of Darwin and Wallace to Malthus was further discussed by him yesterday morning in the class room, as were also the mistakes of our first correspondent and the corrections of the critic.