E. Loomis—Contributions to Meteorology. 11 
Summit remains unchanged, the observed change in the rede 
tion to Sacramento resulting from a change of ian meee : 
41 per cent less than that computed from the formula; but 
all temperatures the observed reduction accords nearly as 
that computed from the formula when the barometer at “Sacra- 
mento stands at 29:9 inches. 
Reduction v. barometer from Summit (elevation 7,017 feet) 
o Sacramento (elevation 31 feet). 
Temp. 4 | M8. | 229. 1 2SO. || QS1. | BBR. | ABS, 24. P 2eb. | 26. 
° L tVot| i VoOo;t Lid . pare 4 LOL)t 214) 6 2460/6 2h) 1 OVI} t 900 
25° | 6 i i Portes 
037 q 016 # VUYUlLO FOUN 
30 L O JO Mogsl | it Uae} l Vdd t VS) 12uUl i Lei) t 164) 4 a2igaiti 240 
Oo 6997|6°989|6-975|6-953 6-936|6-928 
35 L 0 GOtiZ|0 ILVUIO 4Ui0 JtUyst UVTI 7°031)}7°061/7°091 (144)t 104 
O |6-987|6-976|6-967|6-948|6-930|6-911|6°889| 6'867|6°841 
- L |6°794/6-824| 6-854/6°884/6-914|6-944 6°97417-003|7-033/7-063 
a) 6-923 6:919|6'906|6-889|6-870 6°844/ 6°811|6-787 6-750 
45 |u 6°711|6°740|6°770|6°799|6°829| 6°858 6°888/6°917|6°94716°977 
oO 6'895|6-884/6°85 | |6°825 6°798|6°76616°730 6695 
go | Le [6629/6658 6°685/6°717/6'746)6°715/6 8086'S 34 /6°863) 6°82 
O 0 GoVD/ON O10 (00/0 ¢ 0 6 BO Mia VOY 
55 L |6°549!6°578/6°607|6°636|6°665/6°694|6°723/6°752 pan 6810 
O 6°720|6°698 6°667|6°633/6°597 
60 L vO V7JOD)|0 DLO UtoO 672 . Soe 6-729 129 
oO 6°652|6°626|6°606} 6575 ¢ 
g5 | Le |6397|6-425 6-454) 6-482/6-510 94 a 6651 
oO 6:586|6°560|6°530|6°506 
mo | 3 79|6°406|6-434|6-462|6°490/6°518/6-546 6-574 
O 6-560 |6°511/6'487 6-449) 
v5 |b (6251 417|6°445 472 6-499 
) " |6:481/6-438 
L 6180/6 6°398 6-425 
1G | | 6-366} 
__In order to study this question under a still greater variety 
of circumstances I selected two elevated stations in Europe, viz: 
Grand St. Bernard and Colle di Valdobbia. The former station 
is situated in a pass over the Alps, at an elevation of 2,462 me- 
ters above the sea, and the station selected for comparison is 
Geneva, distant 55 English miles from St. Bernard'and elevated 
407 metres above the sea. The gpeervarians are* : published 3 in 
Deleros’ Tables ‘Sm ithsonian Tables, series D, page 11), ee a 
- range of the PRTORICSAE from 546 to 573 aa and for a 
