Observations of the United States Signal Service. 5 
Of these forty-four storms, thirty-two occurred during the five 
months from November to March, and only two occurred dur- 
ing the four months from June to September. 
The third column of the following table shows the number 
of cases in which a storm originated in each of the different 
localities named in column 2d. The first column shows the 
letters by which the locality was designated in column 7th of 
the table on pages 2 to 4. 
Symbol.! Where storm originated. | Cases. ||symbot.! Where storm originated. | Cases. 
P. 0. |Pacifie Ocean, north of n. D. |North of Dakota. 1 
Washington Territory. 2 |/Dak. Dakota. 4 
n. W. |North of Wash’n Terr. 4 |\Neb. |Nebraska. 1 
Or. 1 |in. T. |Northern Texas. 1 
Ut. ta 1 jin. Mi. [North of Michigan. 1 
n. Mo. |North of Montana. 7 ||Ark. |Arkansas. 1 
Mon. |Montana. 5 |iG. M. ‘Gulf of Mexico. 2 
Wy. yoming. 2 ||Ala. |Alabama. 1 
Col. Colorado. 2 |\Cub. |Near Cuba. 1 
N. M. |New Mexico. 5 ||A. O. |Atlantic O.,nearlat 37°.) 1 
nate north of latitude 36°. 
The first stage in the development of each of these storms was 
an area several hundred miles in diameter, over which the height 
of the barometer differed but little from thirty inches, with an 
area of high barometer both on the east and west sides, and at 
a distance of about 1,000 miles. In the few cases in which a 
high barometer is not reported on both sides of the origin, It 1s 
