334 Status of the Theory of Isostasy.. 



it is most crucially tested, the Hayford hypothesis thus 

 receives less support in the facts than does the doctrine 

 of non-compensation. ' ,34 



Instead of analyzing the subject with a microscope, 

 let us stand off from it far enough to get a perspective 

 view of the whole problem, comparing the discrepancies 

 with the agreements, and it will be found that the evi- 

 dence for the existence of isostasy is as striking and 

 conclusive for India as for the United States. The fol- 

 lowing table has been made up by the writer from the 

 detailed results given by Crosthwait. 



Mean deflections and residuals for India. 



A 



B 



C D 



E F 



1 



G 



H 



I 



J 



Group. 



Eegion. 



m 

 G 

 _o 



co 



«4-l 



o 



'r-l 

 CD 



| 



o 



a> 



CD 



o . 

 "£ co 



%^ 



2 g 



O w 

 O S 



^3 .1-1 



9 J 



0, -r=> 



Mean deflection for topo- 

 graphy compensated at 

 depth of 113 7 km. 



. 



s 

 .2 

 o 



CD 



CD 

 ^J 



T2 



CD 

 > 



CD 



cc 



rQ 

 O 



a 



CD 



3 



Mean residual for hy- 

 pothesis of no isostasy 

 Col. F.— Col. D. 



Mean residual for compen- 

 sation at depth 113*7 km. 

 Col. F.— Col. E. 



"o 



:§ ^ 



CO rQ 

 r-l T3 



2 5 

 '■§^ 



W 



Ratio of residuals to topo- 

 graphic deflections. Col. 

 H. divided by Col. D. 



1 



2 



3 

 4 

 5 



7 

 8 

 9 



All 

 5 



10 



Himalayan 



foothills 

 Plains at 



foot of 



Himalaya 

 Northeast 



India 

 Central 



India 

 Northwest 



India 

 Western 



India 

 Eastern 



India 

 Southern 



India 

 United 



States 

 Wisconsin- 

 Michigan 

 Southern 



California 



coast 



6 



4 

 10 



6 

 21 

 23 

 17 

 14 

 733 

 52 



57 



-77-5 



-70-7 

 -44-7 

 -30-7 

 -35-0 

 -34-7 

 -48-1 

 -401 

 30 4 

 9-0 



65 4 



-15-2 



- 6 2 



- 0-2 



+ 0-3 



- 0-5 



- 04 



- 25 



- 0-8 



-30-7 



- 8-5 

 + 7-7 

 + 5-5 

 + 3-9 



- 3-0 



- 4-6 

 + 0-4 



+ 46-8 



+ 62-2 

 + 52-4 

 + 362 

 + 38-9 

 + 31-7 

 + 43 5 

 + 40-5 



-15-5 



- 23 

 + 7-9 

 + 5-2 

 + 4-4 



- 26 



- 2-1 

 + 1-2 



2-9 

 3-7 



39 



0-33 



004 

 0-15 

 0-14 

 011 



008 

 05 

 0-03 



0-20 



003 

 0-18 

 0-17 

 0-13 

 0-07 

 0-04 

 0-03 



o-io 



042 

 0-06 



34 W. H. Hobbs, op. cit., p. 702. 



