1370 EDWARD D. LYNTON 
4. A pronounced feature of the survey is that the trend of the mag- 
netic anomalies conforms with the strike of the beds in the South dome, 
and the manner in which the “high”’ closes on the north is most con- 
vincing. 
5. The buried outcrop of an eroded magnetic bed can be traced 
completely around the South dome, including the Lost Hills field. 
6. The survey shows a magnetic “low” extending from the Lost 
Hills to the South dome, with a marked “high” east of the “low” and 
paralleling it. 
7. The magnetic anomalies at the South dome have a higher in- 
tensity than the rest of the area, because the sandstone beds in the Upper 
Etchegoin cause the magnetic “highs,” and at the south the mantle of 
alluvium is thicker and the Etchegoin thins out, thus decreasing the 
intensity. 
