w 



Am. Jour. Sci., Vol. XLVJ893. 



Plate 



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3x10 



3 Atm. 











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■ 











DIAGRAM 



OF 



EARTH PRESSURES 



AN D 



TEMPERATURE 



FOI\ RADIUS 



















































\,2X10 



! i 



6 Atia. ! 











































































L 























































































































1x10 



6 Atm 



V 



















\ 























































































4000 °C. 







E .wo 



■>°C A 



fOOXIO 6 ! 



'ears. 









3000°C. 



















\ 



2000 °C. 

























E f7< 



vt*C A. 



zox fo e ~5$ur's. 







^ 



iooo°c. 









1 







\ i 









\ 



1 1 1 







N 



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.6 .5 



