PROFESSOR JOHN TYNDALL'S WORKS, 



Essays on the Floating Matter of the Air, in Relation 

 to Putrefaction and Infection. 12mo. Cloth, $1.50. 



On Forms of Water, in Clouds, Rivers, Ice, and Gla- 

 ciers, With 35 Illustrations. 12mo. Cloth, $1.50. 



Heat as a Mode of Motion. New edition. 12ino. 

 Cloth, $2.50. 



On Sound: A Course of Eight Lectures delivered at 

 the Royal Institution of Great Britain. Illustrated. 

 12mo. New edition. Cloth, $2.00. 



Fragments of Science for Unscientific People. 12rao. 

 New revised and enlarged edition. Cloth, $2.50. 



Light and Electricity. 12mo. Cloth, $1.25. 



Lessons in Electricity, 1P75- 1 76. 12mo. Cloth, $1.00. 



Hours of Exercise in the Alps. With Illustrations. 

 12mo. Cloth, $2.00. 



Faraday as a Discoverer. A Memoir. 12mo. Cloth, 

 $1.00. 



Contributions to Molecular Physics in the Domain of 



unbuttons to Molecular Physics 

 Radiant Heat. Cloth, $5.00. 



Six Lectures on Light. Delivered in America in 

 1872-'73. With an Appendix and numerous Illus- 

 trations. Cloth, $1.50. 



Farewell Banquet, given to Professor Tyndall, at Del- 

 monico's, New York, February 4, 1873. Paper, 

 50 cents. 



Address delivered before the British Association, 

 assembled at Belfast. Revised, with Additions, 

 by the author, since the Delivery. 12mo. Paper, 

 50 cents. 



Researches on Diamagnetism and Magne-crystallic 

 Action, including the Question of Diamagnetic 

 Polarity. With Ten Plates. 12mo. Cloth, $1.50. 



New York : D. APPLETON & Co., 1, 3, & 5 Bond St. 



