Page:Popular Science Monthly Volume 11.djvu/112

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the trustees of the institution elected him as its president in 1864, which office he still holds. Coincident with his accession to the presidency of Columbia College, an important step was taken by the managers of the institution for the promotion of scientific education by the establishment of the School of Mines, and the appointment of an able faculty to carry it on. This branch of the college has been so well administered as to become a great success. Its facilities for scientific training are ample and well directed, and in the number of its students it is already the rival of the classical department.

Dr. Barnard has written much upon both scientific and educational topics, and done a good deal of important work in connection with the various international expositions of industry, to which he has been commissioned by our Government. His last important literary undertaking has been the editorship of Johnson's "New Illustrated Universal Cyclopædia." He has received many honors from institutions of learning and leading scientific societies, both in this country and abroad, and has been President of the American Association for the Advancement of Science, of the American Microscopical Society, and of the American Institute, New York. The following are President Barnard's most important publications:

In the Journal of Science.
1. Aurora Borealis, 1838.
2. Improvement in Photography, 1842. (This was one of the earliest processes discovered for quickening the sensitiveness of Daguerre's iodized plates.)
3. Theory of Hot-Air Engine, 1853.
4. Modification of Ericsson's Hot-Air Engine, 1853.
5. Elastic Force of Heated Air, 1854. (A series of papers.)
6. Comparative Expansion of Heat in Different Forms of Air-Engines, 1854.
7. Mechanical Theory of Heat, 1854.
8. Examination of the Theory which ascribes the Zodiacal Light to a Ring surrounding the Earth, 1856.
9. The Eclipse Expedition to Cape Chudleigh, Labrador, 1860.
10. Hydraulics of the Mississippi, 1863.
11. Explosive Force of Gunpowder, 1863.
In the Proceedings of the American Association for the Advancement of Science.
12. On the Pendulum, with Description of an Electric Clock with Pendulum perfectly free, 1858.
13. On the Means of preserving Electric Contacts from Vitiation by the Spark, 1859.
14. Extended Report on the History, Methods, and Results of the American Coast Survey, 1859.
15. On the Assumed Identity of Mental and Physical Forces, 1868.
In the Reports of the Smithsonian Institution.
16. The Mathematical Principles of the Undulatory Theory of Light, 8vo, pp. 133, 1862.