SCIENTIFIC LECTURES AND ESSAYS.
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 examinations. To point out this error, and to claim for science-teaching its appropriate methods, was one object of writing these essays.”
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- General remarks:
- Footnotes have been moved to the end of the chapter.
- In-line multiple line formulas have been changed to in-line single-line formulas, when necessary with brackets added.
- The Table of Contents has been corrected to conform to the text rather than to the original Table of Contents.
- The table on dimensions of farm and road locomotives (page 358) gives the diameter of the boiler shell as 30 feet, which seems unlikely.
- The table on operating costs of trains (page 376) gives Other expenses per square mile. This has been changed to Per mile, the same as the other expenses.
- Feet are sometimes used as unit of area, both knots and knots per hour as unit of speed.
- Changes in text:
- Minor typographical errors have been corrected.
- Reference letters in the text have in several cases been changed to conform to the letters used in the illustrations.
- Except when mentioned here, inconsistencies in spelling have not been corrected. Exceptions:
- Desagulier to Desaguliers;
- Séguin to Seguin;
- Goldworthy Gurney to Goldsworthy Gurney;
- Ctesibus to Ctesibius;
- i.e. to i. e.;
- Warmetheorie to Wärmetheorie;
- tour a tour to tour à tour;
- the beam passes to the condenser to the steam passes to the condenser;
- éléver to élever.
- As early as 1743 (page 68) moved to new paragraph.
- A = 6.264035 changed to a = 6.264035 (page 449).
- Illustrations:
- Illustrations have been moved to the paragraph to which they belong. Page numbers in the List of Illustrations and List of Portraits refer to the original book.
- Illustrations edited to conform to description and references in text:
- Fig. 8: A, F, G changed to A′, F′, G′ (right-hand side of illustration);
- Fig. 19: d (boiler) changed to b;
- Fig. 21: check-valve e not visible in drawing, l added to illustration;
- Fig. 26: s added;
- Fig. 30: lower a and r changed to a′ and r′;
- Fig. 41: q and x added;
- Fig. 42: C flipped over;
- Fig. 43: right-hand E changed to F;
- Fig. 48: renamed items t (tank), f (engine cylinder), u (small engine); items p and q not visible in drawing;
- Fig. 57: f not visible in drawing;
- Fig. 66: references P, Q, R, S, T, U, C C, Da, D, M, and Fa not visible in drawing, other references indicate other parts than explained in text;
- Fig. 99: right-hand F changed to E;
- Fig. 128: X added.
- Where details in the illustrations were not clearly visible in this e-book, a link has been provided to see a larger scale illustration; these may (depending on your system) take some time to load and display.