£. Loomis— Contributions to Meteorology. 11 
The following table contains a complete list of the cases for 
1879. Column Ist gives the number of reference; column 2d, 
the date of observation ; column 84d, the station of heavy rain- 
fall; column 4th, its latitude ; column 5th, its longitude from 
Greenwich ; column 6th, its elevation (in English feet) above 
sea level; column 7th, the rain-fall in twenty-four hours ex- 
Ala in English inches; column 8th, the height of the 
arometer, reduced to sea level; column 10th, the direction of 
the wind at the date of observation ; column 9th, its direction 
twenty-four hours previous; and colamn 11th, shows the direc- 
tion of the given station from the center of low pressure with 
which it is believed to have been associated. 
he average height of the barometer at the time of these 
heavy rains was 29-8 inches, and in only twenty-six cases was 
the barometer below 29°75 inches. In eleven cases the barom- 
eter at the station of greatest rain was above 80 inches ; but 
in eight of these eleven cases, although the barometer was 
above its mean height, it was from three-tenths to seven-tenths 
usual distance. There were however two cases (Nos. 54 and 
Within an area where the barometer was depressed somewhat 
below its mean height, or where the barometer was relatively 
low when compared with neighboring areas of high pressure. 
Within these areas of low pressure there was generally a 
oe movement of the winds. This is indicated by the 
Change in the direction of the winds shown in columns 9th 
and 10th. It will be seen that in eight cases the wind changed 
180° in twenty-four hours; in seventeen cases the wind changed 
135° in twenty-four hours; and in twenty-eight cases the 
wind changed 90° in twenty-four hours. There are, however, 
twelve cases in which no change in the direction of the wind 
Was reported during these twenty-four hours, viz: Nos. 2, 4, 5, 
» 18, 20, 41, 60, 64, 66, 68 and 73. In eight of these cases 
the low center traveled very slowly, and the direction of the 
Jow center from the rain center changed but little in twenty- 
four hours; two of the remaining cases occurred on the sum- 
mit of a mountain about which there is presumed to have been S 
