JoLY — An Estimate of the Geological Age of the Earth. 



65 



Appendix I. 



To facilitate reyiew of the numerical quantities adopted in the calculations 

 involving the Age of the Earth, the chief data are here collected. 



Area of land (Murray and "Wagner), 

 Eatio of oceanic to land-area, 

 Hence, oceanic area, 

 Mean dei)tli of ocean (Murray), 

 Bulk of ocean, . . . 



Mass of a cubic mile of sea-water, . 

 Mass of ocean, .... 

 Mass of NaCl in ocean, . 



„ Na „ . . . 



,, CI combined with Na in ocean, 

 ,, K2S04 in ocean, 

 „ K „ . . . 



„ MgCl, „ . . . 

 ,, CI combined witli Mg in ocean, 

 Annual river discharge into oceans. 

 Mass of sodium in a cubic mile of river- water, 

 Annual river supply of Na, . . . . 

 Annual (calculated) NajO discharge of rivers, 

 K,0 „ „ . 



Estimated bulk of siliceous sedimentai-y detrital rock = layer 1-1 mile thick over land. 



Soda percentage of primitive rock. 

 Potash ,, ,, ,, 



Mean soda percentage of sedimentaries. 



55,814,000 square miles. 

 2-54 : 1. 



141,767 X 10^ square miles. 

 2076 fathoms = 2-393 miles. 

 339,248 X 10' miles. 

 43 X 108 toQs_ 

 1-460 X lO'** tons. 

 39,782 X 10'- tons. 

 15,627 X 10'= tons. 

 24,155 X 10'' tons. 

 1260 X 101= tons. 

 565 X 10'= tons. 

 5568 X 10'= tons. 

 4161 X 10" tons. 

 6524 cubic miles. 

 24,106 tons. 

 15,727 X 10' tons. 

 21 X 10' tons. 

 7-3 X 10' tons. 



3-61. 



2-83. 

 1-47. 

 2-49. 



