TABLE OF CONTENTS. V 



Increase in the Flood Waters in the Cultivated Lands, 101. The Ocean : 

 Secular Changes in the Level of the Ocean, 70 ; New Generalization in 

 Ocean Phj-sics, 72 ; the Challenger Observations on the Deep-sea Bottom, 

 73; Photographing the Waves, 103; Barometric Observations on the 

 Ocean, 101; so-called Tides in Great Lakes, 69; Tides of the Eastern 

 Aleutians and the North Pacific, 70 ; Influence of Winds upon the Tides, 

 73 ; on the Tides in the Roadstead of Fiume, 107 ; Tides of the Mediterra- 

 nean, 113; Origin of Ocean Currents, 71; the Circulation of Ocean Cur- 

 rents, 71. The Air. See Meteorology. 

 (b.) METEOROLOGY. 



Meteorology in general : Nautical Meteorology, 76 ; Treatise on Meteor- 

 ology by Mohn, 78 ; Application of Amsler's Planimeter to Meteorological 

 Calculations, 79; Maritime Conference in London, 88; the Importance of 

 Meteorology, 90. Climatology in general : Influence of Forests on Cli- 

 mate, 74; the Dry Season of Brazil, 79; Report of the Signal-Service Ob- 

 server on Pike's Peak, 80 ; the Frequency of Storms, 80 ; the Passage of 

 Storms to Europe from America, 80; Do Storms Cross the Atlantic? 112; 

 Cause of the Warm Climate of the West Coast of Norway, 81 ; Connection 

 between the Seasons and Human Mortality, 81 ; the Distribution of Thun- 

 der-storms, 82; Currents of Air within Cyclones and Waterspouts, 85; 

 the Temperature of Stormy Winds, 88 ; on Atmospheric Pressure, Winds 

 and Rain, 89 ; Secular Changes of Climate, 90 ; Meteorology in New South 

 Wales, 91 ; Connection of Weather and Colliery Explosions, 114; Periodic- 

 ity of Hail-storms, 116; Climatology of Florida, 117. Weather Signals 

 and Predictions : Daily Weather Charts, 113. Atmospheric Electricity : 

 see Electricity (Physics) ; Atmospheric Electricity, 97 ; Figures made by 

 Lightning, 117; Lightning-conductors, 156; Atmospheric Electricity in 

 Spitzbergen, 157. Atmospheric Pressure and the Winds : on the The- 

 ory of Tornadoes and Waterspouts, 77 ; the Progressive Movement of 

 Areas of Cold Air, 85 ; Carbonic-acid Gas in the Air, 92 ; Barometric Ob- 

 servations on the Ocean, 104 ; on the Distribution of Barometric Pressure 

 in European Russia, 105. Temperature : the Penetration of Cold Air 

 into the Earth, 86; Glaciation of Iceland, 113; Periodicity of Severe 

 Winters, 115. Moisture: Rainfall and Solar Spots, 79; Mirage, 83; Aque- 

 ous Vapor in the Atmosphere, 87 ; Periodicity of Rainfall, 87 ; on the Secu- 

 lar Diminution in Europe of Springs, Rivers, and Streams with the Simul- 

 taneous Increase in the Flood Waters in the Cultivated Lands, 101 ; the 

 Destructive Floods in Southern France, 98 ; the Diurnal and Annual 

 Periodicity of the Moisture in Russia, 108 ; the Hourly Distribution of 

 Rainfall, 114. Instruments : a New Barometer of Large Scale, 83; the 

 New Self-recording Barometer, 84; a very Delicate Barometer, 86; the 

 New Anemoscope, 87 ; the Small Oscillations of the Barometer, 104; on 

 the Accuracy of Anemometers, 108; the Self-registering Barometer of 

 Redier, 111. 



C. GENERAL PHYSICS (xlii) 119 



General: Attraction and Repulsion Resulting from Radiation, 119; the 

 Difference between Dry and Moist Air, 120; on the Laws of Apparent 

 Adhesion, 121 ; the Dissipation of Energy, 122; Crystallization Illustrated 



