HOW TO CALCULATE THE PLANETS’ POSITIONS 53
Moon, it is much quicker, safer and more exact to perform the correction by means of logarithms. A table of logarithms is found on the last pages of our Ephemeris for any year, also a partial table in the back of this book, and its use is exceedingly simple.
At the top of the table is a line of figures: 0 to 23. They are for the Hours or Degrees (both being divisible into 60 minutes); on the left hand side is another column having the minute figures: 0 to 59.
When we wish to find the logarithm of a certain number of hours and minutes we simply place our index finger upon the figure corresponding to the number of hours or degrees wanted, run it down the column till we reach the line corresponding to the minutes wanted. At that point where the line of minutes intersects the column of hours or degrees will be found the desired logarithm.
For instance, the daily motion of the Sun in the horoscope under calculation is 0 degrees 57 minutes. We place our index finger upon the column marked 0 at the top. We run the finger down the page till we come in line with the figure 57 in the minute column. Where this line intersects the column 0 is the figure 1.4025, which is the logarithm of the Sun’s motion on the G. M, T. day from noon Aug. 2, to noon Aug. 3.
In like manner we find the logarithm of interval between G. M. T. and the nearest noon. In this case the interval is 2 hours 15 minutes. Running our index
