THE WORKS OF 



Pro JOHN TYNDALL, LLD., P. U.S. 



L 



HEAT AS A MODE OF MOTION. 



One vol., I2mo. Cloth, $2.00. 



" My aim has been to rise to the level of these questions from a basis so elementary that 

 a person possessing any imaginative faculty and power of concentration might accoin. 

 piny me." From AUTHOR'S PRHFACB. 



II. 

 ON SOUND. 



A Course of Eight Lectures delivered at the Royal Institution of Great 

 Britain. One vol. With Illustrations. I2mo. Cloth, $2.00. 

 " In the following pages I have tried to render the science of Acoustics interesting to 

 ell intelligent persons, including those who do not possess any special scientific culture." 

 From AUTHOR'S PREFACE. 



III. 



FRAGMENTS OF SCIENCE FOR UNSCJENTIFIC 



PEOPLE. 



A Series of Detached Essays, Lectures, and Reviews. One vol., I2mo 

 Cloth, $2.00. 



" My motive in writing these papers was a desire to extend sympathy for science be- 

 yond the limits of the scientific public. . . . From America the impulse came which in- 

 duced me to gather these ' Fragments,' and to my friends in the United States I dedicate 

 them." From AUTHOR'S PREFACE. 



IV. 



LIGHT AND ELECTRICITY. 



Notes of Two Courses of Lectures before the Royal Institution of Great 

 Britain. One vol., I2mo. Cloth, $1.2$. 



" In thus clearly and sharply stating the fundamental principles of Electrical and Op- 

 tical Science, Prof. Tyndall has earned the cordial thanks of all interested in education." 

 From AMERICAN EDITOR'S PREFACE. 



D, APPLET01T & CO., Publishers, 



849 & 851 Broadway, N. Y. 



