34 ANNUAL REPORT OF THE 



To obtain the time of the earthquake at the epicenter, find the 

 distance by the rules as given, and follow up to the top lines 

 where the nearest figure will give the amount in minutes and 

 hundredths to be subtracted from the time of arrival of the 1st 

 or 2nd preliminary as may be required. In the blank space the 

 names of countries, seismic areas, or cities may be entered at their 

 appropriate distances from the Station at which the chart is used. 



