New and Cheaper Edition, uniform. 



HELMHOLTZ'S POPULAE LECTUEES on SCIENTIFIC 

 SUBJECTS, FIRST SERIES. Translated by E. ATKINSON, Ph.D. F.C.S. 

 with Introduction by Prof. TYNPALL. New and Cheaper Edition, with 

 51 Woodcuts. Crown 8vo. price 7s. 6d. 



LIST of the LECTURES : 



s- 

 S. 

 l- 



1. On the Relation of Natural Science 



to Science in General. Tran 

 lated byH. W. EVE, M.A. F.C 

 Head Master of University Co 

 lege School. 



2. On Goethe's Scientific Researches. 



Also translated by Mr. Eve. 



3. On the Physiological Causes of 



Harmony in Music. Translated 

 by A. J. ELLIS, M.A. F R.S. 



4. Ice and Glaciers, Translated by 



E. ATKINSON, Ph.D. F.C.S. Pro- 

 fessor of Experimental Science, 

 Staff College. 



5. On the Interaction of the Natural 



Forces. Translated by Professor 

 TYNDALL, LL.D. F.R.S. 



6. The Recent Progress of the 



Theory of Vision. Translated 

 by P. H. PYE-SMITH, B.A. M.D. 

 F.R.C.P. Guy's Hospital : 



I. The Eye as an Optical 



Instrument. 



II. The Sensation of Sight. 

 III. The Perception of Sight. 



7. On the Conservation of Force. 



Translated by E. ATKINSON, 

 Ph.D. F.C.S. 



8. On the Aim and P 



sical Science. 

 WALTER FLIGHT, 

 Museum. 



of Phy- 

 anslated by 

 ,Sc. British 



HELMHOLTZ on the SENSATIONS of TONE as a Physio- 

 logical Basis for the Theory of Music. Translated, with the Aitthor's 

 sanction, from the Third German Edition, with Additional Notes and 

 an Additional Appendix, by ALEXANDER J. ELLIS, F.R.S. &c. 8vo. 

 price 365. 



'It is hardly too much to say that this 

 volume far exceeds in value any and 

 every similar work.' ORCHESTRA. 



' The most important contribution 

 to the science of music which has at 

 any period been received from a single 

 source.' MUSICAL STANDARD. 



' The present book supersedes all 

 other treatises on the physics of 

 musical sound and the necessary 



relations of this to systems of melody 

 and harmony.' 



PALL MALL GAZETTE. 



' It is unnecessary for us to say 

 that this famous book will be wel- 

 comed alike by the 'physicist, the 

 acoustician, and the musician. It is 

 one of the most original works of the 

 second half of this century.' 



QUARTERLY JOURNAL OF SCIENCE. 



London, LONGMANS & CO. 



