Earth-Movements of Eastern America. 563 



Anomalies of Terrestrial Gravity (after Bowie). 



Shaded area represents excess ( + ) and unshaded deficiency ( — ) in inten- 

 sity — both calculated in terms of thickness of rock-strata in feet, as given in 

 figures on map. 



Errata on map: At New Orleans read —430; at Beaufort —700° ; at 

 Durham + in place of — . 



