2 E. Loomis — Results from an examination of the 



The lower line shows the averages for the three months, regard 

 being had to the number of cases in each month. Compar- 

 ing these results with those given in my last article for areas 

 of low barometer (this Jour., vol. x, p. 5), we find that for each 

 month the course of high barometer is more southerly than 

 low barometer. These dilferences are shown in column fourth. 

 Column fifth shows the differences in velocity for each month. 



These observations indicate that while the average track of 

 storms east of the Eocky Mountains, across the United States, 

 is nine degrees to the north of east, areas of high barometer 

 advance toward a point several degrees south of east, and with 

 a velocity somewhat less than the former. 



Monthly mi?iima of temperature. 



In a former article (this Jour., vol. ix, p. 7) I gave a table 

 showing the lowest temperature observed at New Haven for 

 each month during a period of three years, together with the 

 height of the barometer, direction of the wind, and degree of 

 cloudiness for the corresponding dates, and I expressed the 

 opinion that these low temperatures are due in part to the 

 descent of cold air within an area of high barometer. Inas- 

 much as some persons ascribe these low temperatures to a flow 

 of air from a higher latitude, it has appeared to me that it 

 would be instructive to study the same phenomenon at a 

 locality where a current of air from a colder latitude is impos- 

 sible ; and such a locality must be found at the point of mini- 

 mum temperature for the northern hemisphere. Now accord- 

 ing to Dove's charts ; during the winter months Jakutsk, in 

 Siberia, lat. 62° 2' N., is situated very near the center of great- 

 est cold for the northern hemisphere. I have, therefore, sought 

 for a complete meteorological journal at this station, and have 

 found it in Middendorff 's Sibirische Reise, Band I, pp. 28-49, 

 extending from Sept., 1844, to June, 1846. The following 

 table shows the results obtained for each month of this period. 



Column first shows the date of the lowest temperature for 

 each month ; column second shows the lowest temperature for 

 each month in degrees of Eeaumur ; column third shows the 

 direction of the wind, and column fourth shows the force of the 

 wind ; column fifth shows whether the sky was clear or over- 

 cast ; column sixth shows the height of the barometer expressed 

 in Russian half lines ; column seventh shows the mean height 

 of the barometer for each month ; column eighth shows how 

 much the observed height of the barometer differed from the 

 mean height expressed in English inches (one-half line-O'OS 

 inch English). 



From this table it will be seen that the monthly minima of 

 temperature are almost entirely independent of the direction of 



