§ 3 The Sky of the Alps*
V. ON DUST AND DISEASE. *
Experiments on Dusty Air. *
The Germ Theory of Contagious Disease. *
Parasitic Diseases of Silkworms. Pasteur’s Researches. *
Origin and Propagation of Contagious Matter. *
The Germ Theory applied to Surgery. *
The Luminous beam as a means of Research. *
The Floating Matter of the Air. *
Dr. Bennett’s Experiments. *
Application of Luminous beams to Water. *
Chalk-water. Clark’s Softening Process. *
Cotton-wool Respirator. *
Fireman’s Respirator. *
Helmholtz on Hay Fever. *
VI. VOYAGE TO ALGERIA TO OBSERVE THE ECLIPSE. *
VII. NIAGARA. *
VIII. THE PARALLEL ROADS OF GLEN ROY. *
IX. ALPINE SCULPTURE. *
X. RECENT EXPERIMENTS ON FOG-SIGNALS. *
XI. ON THE STUDY OF PHYSICS. *
XII. ON CRYSTALLINE AND SLATY CLEAVAGE. *
XIII. ON PARAMAGNETIC AND DIAMAGNETIC FORCES. *
XIV. PHYSICAL BASIS OF SOLAR CHEMISTRY. *
XV. ELEMENTARY MAGNETISM. *
XVI. ON FORCE. *
XVII. CONTRIBUTIONS TO MOLECULAR PHYSICS. *
XVIII. LIFE, AND LETTERS OF FARADAY. *
XIX. THE COPLEY MEDALIST OF 1870. *
XX. THE COPLEY MEDALIST OF 1871. *
XXI. DEATH BY LIGHTNING. *
XXII. SCIENCE AND THE ‘SPIRITS.’ *