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degree stili in cycles of 28, 56 and 84 years. I may say that I have found a year 

 in the early part of this century, from which (if the barometric-curve is any guide) 

 the weather nioves backward and forward, and 

 that possibly one may be able to lay ones finger 

 on the year in the last century the weather of 

 which corresponds to that of 1881. 



« One thing which struck me very much 

 in working at this subject was the curio us figures 

 which preseiited themselves and their remarkable 

 symmetry in many cases. I give two or three 

 now just to illustrate this point. 



« Figure 1 represents the barometric readings 

 for the years 1799-1810. The circle represents 

 mean pressure at London for 100 years. Now 

 from this diagram it is evident that if one-half the figure is given (viz. from 1799 

 to 1805), the remainder is known, with the exception that in 1810 the barometer 

 was higher than the forecast. 



« In figure 2 the symmetry is equally remar- 

 kable, being marred only by a rise of the ba- 

 rometer in 1843. Of these irregularities I am 

 able to fender a satisfactory account. 



« In figure 3 however observe the almost 

 perfect symmetry of the two halves. 



« 1 shall now illustrate my statement that 

 the perihelion-curve of the earth forecasts the 

 weather of the following year by indicating whe- 

 ther there will be a high or low barometer, and 

 whether the barometer of any year will be higher 

 or lower than that of the preceding year. For 

 example, in figure 4 the perihelion-curve descends 

 from 1854 to 1855, therefore the barometer for 1856 will be lower than that 

 for 1855. The same is true for the lower and opposite part of the curve. In 

 regard to the barometer for the years 1854 

 and 1855, 1858 and 1859, the amount of rise 

 or fall may be accurately estimated iftheheight 

 of the barometer in 1853 and 1857 is known. 



« From figure 5 it is evident that the 

 weather was forecast two years in advance from 

 1868 to 1875, and that the movement of the 3 ' 

 earth on January l st , 1870, indicated that 1872 

 would be a year of very low barometer. The last 

 instance of a barometer nearly as low was just 

 84 years before. 



« Now since the irregularities of the earth 



Fig. 3. 



