GENERAL SUMMARY OF CONTENTS 



YOLUME V. OF COSMOS. 



INTRODUCTION to the special results of observation in the domain of 

 telluric phenomena . . . . pp. 1 9 



FIRST SECTION 9 162 



Size, form, and density of the earth .... 9 34 



Internal heat of the earth 34 48 



Magnetic activity of the eartn 49 162 



Historical portion 49 87 



Intensity 87101 



Inclination 102 118 



Declination 118151 



Polar light 151162 



SECOND SECTION 162483 



Keaction of the interior of the earth upon its surface 162, etc. 



Earthquakes ; dynamic action, waves of concussion 165 183 



Thermal springs 184 207 



Gas-springs; salses, mud-volcanoes, Naphtha-springs 207 223 



Volcanoes with and without structural frames (conical and bell-shaped 

 mountains) 224483 



Range of volcanoes from North (19| N. L.) to South, as far as 46* 

 South latitude : Mexican volcanoes, pp. 281 and 401 (Jorullo, pp. 309, 

 323, note at p. 310) ; Cofre de Perote, p. 326, Cotopaxi, notes pp. 337 

 341. Subterranean eruptions of vapour, pp. 342 345. Central America, 

 pp. 268278. New Granada and Quito, pp. 281285, and notes; 

 (Antisana, pp.331 336, Sangay, p. 446 ; Tungurahua, p. 444; Coto- 

 paxi, pp. 3389 ; Chimborazo, p. 461, note 80;) Peru and Bolivia, 

 p. 286, note; Chili, p. 287, note 75; (Antilles, p. 421, note 31). 





