64 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 68 



Consider next the numbers in the other vertical columns. These 

 give the energy scattered from the " step " values into the deviations 

 indicated in the first column and are determined by the function 6". 

 The maximum in each case falls at the deviation corresponding to 

 the " step " value, the other values falling off similarly above and 

 below to represent the energy scattered tow^ards the violet and the 

 long wave-lengths respectively. These values plotted with the 



deviations of the first column would make a curve similar to S(6) 

 but with the maximum ordinate equal to Ea{0). These values, added 

 from the top to the bottom of a column and including the " step " 

 value, would give the value of the term containing the first integral, 

 or the total amount of energy belonging to the deviation indicated 

 by the " step " value,^ i. e., this sum indicates the energy observed at 



^ The columns to the left are not carried upward to their full extent. 



