36 =©6Scientific Works published by Longmans, Green, & Co. 

WORKS BY JOHN TYNDALL, D.C.L., LL.D., F.R.S. 
LECTURES ON SOUND. With Frontispiece of Fog-Syren, and 
203 other Woodcuts and Diagrams in the Text. Crown 8vo., ros. 6d. 
HEAT, A MODE OF MOTION. With 125 Woodcuts and 
Diagrams. Crown 8vo., 125. 
LECTURES ON LIGHT DELIVERED IN THE UNITED 
STATES IN 1872 AND 1873. With Portrait, Lithographic Plate, and 59 
Diagrams. Crown 8vo., 59. 
FRAGMENTS OF SCIENCE: a Series of Detached Essays, 
Addresses, and Reviews. 2 vols. Crown 8vo., 16s. 
Vol. I.—The Constitution of Nature—Radiation—On Radiant Heat in Relation to the 
Colour and Chemical Constitution of Bodies—New Chemical Reactions produced by 
Light—On Dust and Disease— Voyage to Algeria to observe the Eclipse—Niagara— 
The Parallel Roads of Glen Roy—Alpine Sculpture—Recent Experiments on Fog- 
Signals—On the Study of Physics—On Crystalline and Slaty Cleavage—On Para- 
magnetic and Diamagnetic Forces—Physical Basis of Solar Chemistry—Elementary 
Magnetism—On Force—Contributions to Molecular Physics—Life and Letters of 
FarapAy—The Copley Medallist of 187-—The Copley Medallist of 1871—Death by 
Lightning—Science and the Spirits. 
Vol. IIl.—Reflections on Prayer and Natural Law—Miracles and Special Providences—On 
Prayer as a Form of Physical Energy—Vitality—Matter and Force—Scientific Ma- 
terialism—An Address to Students—Scientific Use of the Imagination—The Belfast 
Address—Apology for the Belfast Address—The Rev. JAMEs MarTINEAU and the 
Belfast Address—Fermentation, and its Bearings on Surgery and Medicine—Spon- 
taneous Generation—Science and Man—Professor VircHow and Evolution—The 
Electric Light. 
NEW FRAGMENTS. Crown 8vo., ros. 6d. 
ConTENTS.—The Sabbath—Goethe’s ‘ Farbenlehre '—Atoms, Molecules, and Ether Waves 
—Count Rumford—Louis Pasteur, his Life and Labours—The Rainbow and its Congeners— 
Address delivered at the Birkbeck Institution on October 22, 1883—Thomas Young—Life in the 
Alps—About Common Water—Personal Recollections of Thomas Carlyle—On Unveiling the 
Statue of Thomas Carlyle—On the Origin, Propagation, and Prevention of Phthisis—Old 
Alpine Jottings—A Morning on Alp Lusgen. 
ESSAYS ON THE FLOATING MATTER OF THE AIR IN 
RELATION TO PUTREFACTION AND INFECTION. With 24 Wood- 
cuts. Crown 8vo., 75. 6d. 
RESEARCHES ON DIAMAGNETISM AND MAGNECRY- 
STALLIC ACTION;; including the Question of Diamagnetic Polarity. Crown 
8vo., 125. 
NOTES OF A COURSE OF NINE LECTURES ON LIGHT, 
delivered at the Royal Institution of Great Britain, 1869. Crown 8vo., ts. 6d. 
NOTES OF A COURSE OF SEVEN LECTURES ON 
ELECTRICAL PHENOMENA AND THEORIES, delivered at the Royal 
Institution of Great Britain, 1870. Crown 8vo., 15. 6d. 
LESSONS IN ELECTRICITY AT THE ROYAL SiS 
TUTION 1875-1876. With 58 Woodcuts and Diagrams. Crown 8vo., 2s. 6d. 
THE GLACIERS OF THE ALPS: being a Narrative of Excur- 
sions and Ascents. An Account of the Origin and Phenomena of Glaciers, and 
an Exposition of the Physical Principles to which they are related. With 
7 Illustrations. Crown 8vo., 6s. 6d. net. 
HOURS OF EXERCISE IN THE ALPS. With 7 Illustrations. 
Crown 8vo., 6s. 6d. net. 
FARADAY AS A DISCOVERER. Crown 8vo., 35. 6d. 
