10 ££ Loomis—Observations of the U. S. Signal Service. 
Barometer above 30°65 inches. 
2 g \=t. Low on East side. Low on West side. 
No. Date. ¢ Station. & |SoH) nated 
g a \g "| where.| Bar. Station. Bar. Station. 
1874. | . 
{ Jan. 23.3 30-71) Yankton — 2) 38 |Can. /|29-27|Cape Rosier 
24.1; -86] do. 17 “TT do. 
24.2; -90\Cairo 36 
oa} 243] 81) Go 8 
25.1) -91 LaCrosse 3 *85| Eastport 29°95) Portland, Or. 
25.2} -81|Milwauk 1 “79 Halifax 86 do. 
25.3} “75|Port Stanley 3} *88| do -83|Fort Benton. 
§ 26.1! °81|/Memphis 41, “76|\Sydney 80; do. 
Jan. 29.2) -80 Pembina —18, 47 |Br.Col.| -88Cape Rosier 
29.3; -98) do. —26 “98 0. 
30:1; “TT; do. 22 “73| Halifax 
30.2) 67 — —10 -69\Santa Fe. 
30. ive —21 : do. 
Bis} 8 Chatham —35 *60| do. 
254 31.3 “Marquette 2 *64| do. 
Feb. 1.1 sro |Brockyille —25 “14| do. 
1.2} 84 Burlington 6. 
1.3} -87| do. —13 
2.1| -89 Chatham —22 
2.2) -76 Father Point |— 6 *98| Mobile. 
2.3) “73 Halifax —10 
26 Feb. 5.1} -66 Brockville — 8 30 |Br.Col.' -59/Sydney ‘63 Santa Fe 
Feb.23.2| °72)/Yankton 11| 50 |Br.Col.}| °56/Que 
23.3; °86| do. — 2 -47\Father Point 
27 24.1} 82) do. 1 -63/ Sydney 
24.2} -*71' LaCrosse 5 
24.3) --68| do. 3 
Mar.23.1| °73 Breckenridge |— 8] 48 |Br.Col.| -47/Sydney 
28 2. 67 do. 15 *38| do. 
yt ‘TL Davenport 21 *49| do. 
‘70 St. Louis 23 *60| do. 
29 Apr.12.1} ‘66) Alpena 18} 32 |Can. 49) do. “49 Fort Sully. 
Sep. 17 67 es Rosier 39} 35 (Br.Col. 
30 18.1 = 7 “69 Leavenworth. 
18.2 8 49} do. 
3}. . Get 122 0) Yankton 16| 37 |Can. *60\Cape Rosier 95|S. Francisco. 
2 Oct. 30.3 0'Fort Sully 16! 41 'Br.Col.| -47'/Sydney 
These cases correspond to thirty-two different areas of high © 
from 
months from May to Au 
Areas of unusually high 
In order to show how far these 
dependent upon latitude and longitude, t hat oe aire Bes the 
barometer, and Ba of these occurred during the six months 
Octo March, and none —— during the four 
More than half of the whole 
number occurred during the months of Dees and January. 
pressure are thus found to occur at 
the same season of the year as areas of cargos low se 
ese cases 0 
. 
a rp pornicsy. oe stations: ww 
os including the stations west of the ward of 102°, 
