Popular Lectures on Scientific Subjects. By H. HELMHOLTZ, Professor
of Physics in the University of Berlin. First Series. Translated by
E. ATKINSON, Ph. D., F. C. S. With an Introduction by Professor
TYNDALL. With 51 Illustrations. 12mo. Cloth, $2.00.
_CONTENTS._--On the Relation of Natural Science to Science in
General.--On Goethe's Scientific Researches.--On the Physiological
Causes of Harmony in Music.--Ice and Glaciers.--Interaction of the
Natural Forces.--The Recent Progress of the Theory of Vision.--The
Conservation of Force.--Aim and Progress of Physical Science.
Popular Lectures on Scientific Subjects. By H. HELMHOLTZ. Second
Series. 12mo. Cloth, $1.50.
_CONTENTS._--Gustav Magnus.--In Memoriam.--The Origin and
Significance of Geometrical Axioms.--Relation of Optics to
Painting.--Origin of the Planetary System.--On Thought in
Medicine.--Academic Freedom in German Universities.
"Professor Helmholtz's second series of 'Popular Lectures on
Scientific Subjects' forms a volume of singular interest and value.
He who anticipates a dry record of facts or a sequence of immature
generalization will find himself happily mistaken. In style and
method these discourses are models of excellence, and, since they
come from a man whose learning and authority are beyond dispute,
they may be accepted as presenting the conclusions of the best
thought of the times in scientific fields."--_Boston Traveler._
Science and Culture, and other Essays. By Professor T. H. HUXLEY,
F. R. S. 12mo. Cloth, $1.50.
"Of the essays that have been collected by Professor Huxley in this
volume, the first four deal with some aspect of education. Most of
the remainder are expositions of the results of biological
research, and, at the same time, illustrations of the history of
scientific ideas. Some of these are among the most interesting of
Professor Huxley's contributions to the literature of
science."--_London Academy._
"It is refreshing to be brought into converse with one of the most
vigorous and acute thinkers of our time, who has the power of
putting his thoughts into language so clear and forcible."--_London
Spectator._
Scientific Culture, and other Essays. By JOSIAH PARSONS COOKE,
Professor of Chemistry and Mineralogy in Harvard College. 12mo.
Cloth, $1.00.
These essays are an outcome of a somewhat large experience in
teaching physical science to college students. Cambridge,
Massachusetts, early set the example of making the student's own
observations in the laboratory or cabinet the basis of all
teaching, either in experimental or natural history science; and
this example has been generally followed. "But in most centers of
education," writes Professor Cooke "the old traditions so far
survive that the great end of scientific culture is lost in
attempting to conform even laboratory instruction to the old
academic methods of recitations and examination. To point out this
error, and to claim for science-teaching its appropriate methods,
was one object of writing these essays."