COMPLETE WORKS OF JOHN TYNDALL, F.R.S. 



Contributions to Molecular Physics in the Domain of Badiant Heat. 



A Series of Memoirs published in the " Philosophical Transactions " and " Philo- 

 sophical Magazine." With Additions. 12mo. ^5.00. 



Heat as a Mode of Motion. New edition. 12mo. Cloth, |2.50. 



Lessons in Electricity, at the Royal Institution, 1875-'76. 12mo. 



Cloth, $1.00. 



Light and Electricity: Notes of Two Courses of Lectures before the Royal Insti- 

 tution of Great Britain. 12mo. Cloth, $1.25. 

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

 ence, Professor Tyndall has earned ihe cordial thanks of all interested iu education." — From 

 American Editor's Preface. 



Six Lectures on Light. Delivered in America in 1S72-18Y3. 12mo. Cloth, $1.50. 



"I propose to take a einiile department of natural philosophy, and illustrate, by means of it, 

 the growth of scientific knowledge under the guidance of experience. I wish to make you ac- 

 quainted wirli certain elementary phenomena ; then to point out to you liow those theoretic prin- 

 ciples by which phenomena are explained, take root and flcnri.^h in the human mind, and after- 

 ward to apply these principles to the whole body of knowledge covered by the lectures. My 

 de^ire is to show you, with as little breach of contiiniiiy as possible, something of the pant growth 

 and present aspect of a department of science in which have labored some of the greatest ii.fellects 

 the world has ever seen."'— 2'/<e Author. 



Sound. Revised and enlarged edition. Illustiated. 12ino. Cloth, $2.00. 



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

 eenr persons, including those wbo do not possess any special scientific culture. The subject is 

 treated expeiimentally throughout, and I have endeavored so to place each experiment belore the 

 reader, that he should realize it as an actual operation. My desire, indeed, has been to give dis- 

 tinct images of the various phenomena of acoustics, and to cause them to be seen mentally in their 

 true relations."— i^rom the Preface. 



The Forms of Water, in Clouds and Rivers, Ice and Glaciers. With ;i5 

 Illustrations. 12mo. Cloth, $1.50. 



"In this volume Professor Tyndall has presented a noble illustration of the acnteness and 

 subtlety of his intellectual powers, the scope and insight of bis scientific vision, his singular com- 

 mand of the appropriate language of expositinn, and the peculiar vivacity and grace with which he 

 unfolds the results of intricate scientific research." — Xew York Tribune. 



The publication of the present volume was tlie first step in carrying out a systematic enterprise 

 to furnish the public with popular scientific books of a superior character, ami initiated a series of 

 Buch works on a wide range of scientific subjects, prepared by the leading thinkers of different 

 countries, and now widely known as the " International Scientific Series." 



Hours of Exercise in the Alps. With Illustrations. 1 2mo. Cloth, $2.00. 



Faraday as a Discoverer. A Memoir. 12ino. Cloth, $1.00. 



Fragments of Science for Unscientific People. A Series of Detached Essays, 



Lectures, and Reviews Revised and enlarged edition. 12mo. Cloth, $2.50. 



"My motive in writing these papers was a desire to extend sympathy for science beyond the 

 limits of the scientific public. . . . From America the impulse came which induced me to gather 

 these ' Fragments,' and to my friends in the United States I dedicate them."— i^Vom Author's 

 Preface. > 



Address delivered before the British Association assembled at Belfast. 



Revised, with Additions, by the Author, since the Delivery. 12mo. Paper, 50 

 cents. 



Essays on the Floating Matter of the Air, in Relation to Putrefaction 



and Infection. With Illustrations. 12mo. Cloth, $1.50. 



CONTENTS.— 1. On Dust and Disease; II. Optical Deportment of the Atmosphere in Rela- 

 tion to Putrefaction and Infection; III. Further Researches on the Deportment and Vitality of 

 Putrefaction Organisms; IV. Fermentation, and its Bearings on Surgery and Medicine; V. Spon- 

 taneous Generation ; Appendix. 



New York: D. APPLETON & CO., Publishers, 1, 3, & 5 Bond Street. 



