The Keith Prize for the biennial period 1875–77, which has been awarded to Professor HEDDLE, for his papers on the “Rhombohedral Carbonates,” and on the “Felspars of Scotland,” originally communicated to the Society, and containing important discoveries, was presented by the President (Professor Kelland) with the following remarks:—

Professor Heddle,—I am here to-night to exemplify a remark which is often made, that to insure success in an address such as I am about to deliver, the best way is to commit the charge of it to one absolutely ignorant of the subject. No false pride will then stand in the way of the best sources of information, nor will any undue admixture of half knowledge clog and darken the truth. For every particular contained in these remarks, then, I at once unhesitatingly acknowledge myself indebted to Professor Geikie.