E. Loomis— Observations of the U. 8. Signal Service. 11 
Barometer at Colorado Springs and Pike's Peak. 
No. Date. Colorado Springs. Pike’s Peak. Diff. 
jh. m. barom. h. m. barom. h. m. 
1} Max. |1873. Nov. 1610.25 a.m. | 30°15 4.25 p.m: | 30°12|+ 6.10 
2) Min. 22) 7.35 a.m. | 29°69 1.35 a.M.| 29° 0.00 
3| Min. Dec. 2] 3.52 p.m.| 2948| 3. 7.35 a.m.| 29°18] +15.43 
4| Min. 7) 4.35 p.m. | 29°58 1.47 PM. | 29°47|+4 3.12 
5 | Min. 11) 4,35 p.m. | 29°60 4.35 P.m.| 29°48| 0.00 
6| Max. 13} 8,13 A.M. | 30°27 7.47 P.M. | 30°18 | +11.34 
1) Max. 24, 813 aM.!/ 30°27! 11.00P.m.| 30°12| +14.47 
8) Min. 25'11.00 p.m. | 29°80 26. 7.35 a.M.} 29°75|+ 8.35 
9 Min. |1874. Jan. 3) 7.35 a.m.| 29 28 4.35PM. | 29°32|+ 9.00 
10) Max. 6112.00M. | 30°] 1.47 pm. | 30°02|+ 7.47 
Mi 26| 4.35 P.m.| 29°71 /27. 7.35 a.m.| 29°65 | +15.00 
12| Max 2 13 a.m.| 30°1 11.00 p.m. | 30 +1447 
13} Max 812 30°12| 9. 7.35 a.m.| 29°93 | +19.35 
14} Min. 10,25 a.m. | 29°31 4.35 P.M. | 29°20}+4 6.10 
15| Max. 1911.00pM.| 29°81} 11.00P.m./ 29°64] 0.00 
16} Min. March 5 11.00 p.m. | 29°43 4.35 P.M. | 29°36|— 6,25 
17| Min. 30) 4.13PM. | 29°65 4.35 P.M. | 29°58|+ 0,22 
18} Max April 2) 8.52 a.m.| 30-19 4.35PM. | 29°95|+4 17.43 
19 | Min. | 413 P.M. | 29°63 4.35 PM. | 29°60|+ 0.22 
20| Min May 1 4.35PM. | 29°50| 2. 7.35 a.m.| 29°50 | +15.00 
21) Min. 9) 3.52 p.m. | 29°39 4.35 P.M. | 29°46 
22 | Max Oct. 2111,00 p.m. | 30°28 22. 12.00 0°27 | +13.00 
23 | Min 29°64 7.35 A.M. | 29°63 
4\M 26 12.00 M 30°21 4.35 P.M. | 30°11) + 4.35 
25 | Min. 28| 7.354 29°59 3.17 a.m. | 29°63|— 4.1 
26) Max 3011.00 P.M. | 30°31; 11.00P.m.| 29°98/ 0.00 
27 Nov. 1212,00m. | 30-16 4.35 P.M. | 30°06|/+ 4.35 
28 | Min. 9 735 amM.| 29°32 7.35 A.M. | 29°37 0.00 
9) Max. 25° 1,25 a.m.| 29-98 1.35 am.| 29°95|+ 6.10 
30| Min. Dec. 15 4.35 P.M.| 29°58 7.47 p.m. | 29°56|}+4+ 3.12 
31| Max. 23 11.00P.M.| 30°08} 11.00P.M.| 29°79) 0.00 
32| Max. |1875.Jan. 21 4.35 p.m. | 30-03 11.00 p.m. | 29°76|+ 6.25 
33| Min. | 211.00 pM. | 29°75 (23. 7.35 a.m.! 2954/4 8.25 
e 
Pike's Peak was lowest at 4.35 P.M, but at 7.35 a. M. of the 
both of these cases the minima occurred sensibly at the same 
of 1,880 feet, 
“ come the following conclusions: that over the United 
States, oth the maxima and minima of atmospheric pressure 
