[ ON THE ADVISABLENESS OF IMPROVING NATURAL KNOWLEDGE.* ]
[ GEOLOGICAL CONTEMPORANEITY AND PERSISTENT TYPES OF LIFE.* ]
[ WILLIAM HARVEY AND THE DISCOVERY OF THE CIRCULATION OF THE BLOOD. ]
NOTICE TO THE FIRST EDITION.
The Publisher of these interesting Lectures, having made an arrangement for their publication with Mr. J.A. Mays, the Reporter, begs to append the following note from Professor Huxley:—