444: F. H. Bigelow — Inversion of Temperatures in 



of the existence of a system of magnetic poles and heterogen- 

 eous distribution. Furthermore the cosmical region between 

 the sun and the earth must be filled with a magnetic radiation 

 as distinct from the electromagnetic field, a fact of profound 

 significance in considering the relations of electricity and mag- 

 netism to the constitution of the ether. The meteorological 

 system is under the direct influence of this solar field, and 

 shows itself primarily in the temperatures of the polar regions, 

 and secondarily in the circulations of the air dependent upon 

 them. Other phenomena of this polar field are the solar mag- 

 netic storms, the earth currents, and the aurora which is prop- 

 erly the visible vibration of this magnetic radiation in passing 

 through the atmosphere, in variable intensities. 



Variations of the Meteorological and the Magnetic Elements in 

 the Annual and the Sun Spot periods. 



An extensive compilation of material has been worked out 

 to determine whether the synchronous variations of meteoro- 

 logical and magnetic elements extend to long periods, such as 

 the annual, due to the orbital motion of the earth, and the 

 eleven year period, of which the sun spot frequencies is char- 

 acteristic. The results are briefly mentioned, as a complete 

 description of the process is not suitable to this paper. 



An arbitrary scale was constructed on semi-transparent cellu- 

 loid, the size of the daily weather map, on which the lines of 

 latitude and longitude are drawn, as well as certain curves 

 more or less parallel to and others perpendicular to the High 

 Pressure Belt of the United States. By means of these mete- 

 orological coordinates, the positions of the estimated centers of 

 all the Highs and Lows, as well as the axis of the clearly de- 

 fined waves (see previous paper) were read off for the years 

 1882-1893 inclusive. These were separated into northern and 

 southern groups, which were treated independently. The 

 coordinates were condensed and tabulated so as to be collected 

 by years and by magnetic periods, the object being to learn 

 whether such mean coordinates show any variations in the 

 latitude. The accompanying map shows the resulting positions 

 of the mean North and South High, and North and South Low 

 Pressures, respectively, and also the axis of the advancing wave. 

 The North Low and the South High lines are recognized as the 

 axes of Ferrel's Low Pressure belt, which forms a portion of 

 the polar circuit, and the Mid latitude high pressure belt which 

 forms the tropical circuit. The North High track is the average 

 position of the Highs traveling along the polar circuit; the 

 South Low is that of the average position of formation or 

 occurrence of cyclones in the Southern United States. To 



