12 EF. Loomis— Contributions to Meteorology. 
range of temperature from —12° to +18° centigrade. The 
same table shows the ee reduction as far as the range of 
the observations will poise 
Reduction wip esiahigres fice Grand St. Bernard Rofengmore 2,462 4 
eters) to Geneva (elevation 407 meters). 7 
fae sac. | sda. | soz. | 555. | cos. | sei. | 564. | Sev, | 57. | 5. © 
Jo) Le [169-44 170-37 [171-31 172-24 |173-18 |174-11 {175-05 1175-99 [17692 [177-84 
O 169°83 |170°79 
10| E {167-84 |168°77 |169°70 |170°62 |171-55 |172°47/173-40 [174-33 |175-26 |176:17 
O |167-02 |167-99 |168-89 |169°64 |170-43 |171-19 s 
g| L {166-26 |167°18 |168°10 |169°02 |169-94 )170-85 |1 71°77 |272°69 [173-6] |174°52 
O |165-94 |166-88 |167°76 |168°60 |169°42 |170°38|171°36 
6 L |164°71 |165°62 |166°52 |167°43 |168°34 |169°25 |170°16 |171°17 |171°98 |172°88 — 
©) O [164-66 |165-52 [166-37 |167-20 [167-90 |168°69 |169°57 |170°51 3 
4 L |163°20 |164°10 |164°99 |165°89 |166°79 |167°69 |168°58 |169°48 |170°38 |171°28 
O |163-04 |163-88 |164-72 |165°55 |166-33 |167°08 |167°84 |168-46 : 
_ g| L [161-70 [162-59 |163-48 |164-37 |165-26 |166-15 |167-04 |167-93 | 168" - 169°71 
O 162-00 |162-95 |163-90 |164-71 |165-49 |166-27 |166°97 |167-6 = 
o| E [160-22 |161-10 |161-98 |162°87 |163-75 | 164-64 |165°52 166-41 [167° 2 16817 
; O 160-40 |161-46 |162-33 |163°18 |163-99 |164-80 |165°61 |166°6 = 
is L }158-78 |159°65 |160°53 |161°41 |162°28 |163°16 |164°03 |164°91 |165° = 166°65 — 
“10 159°79 |160°85 |161-72 |162°55 |163°37 |164°19 |164-90 |165°57 
4| L |157-36 |158-23 )159°10 |159-97 |160-83 |161-70 |162°57 |163°44 |164°30 |165°17 
0 159-43 |160°40 }161°37 |162°12 |162°89 |163°67 |164°57 — 
g| L [155-98 |156-84 |157-70 |158°55 |159-41 160-27 161-13 |161-99 |162-84 |163°70 
O 159°77 |160°52 |161-06 |161-80 |162-58 |163°33 
8 L |154-62 |155-47 |156°32 |157-17 |158°02 |158°87 |159°72 |160°57 |161-42 |162°27 
O 159°30 160-03 |160-75 |161°51 |162°17 
1o| E [153-28 [154-11 |154-96 155°80 |156-64 |157°49 |158°33 |159°18 |160°02 |160°87 ~ 
) 158-00 |158-79 |159°63 |160°38 |161°16 
1o| LE [151-96 |152°79 [153-63 | 154-46 |155°30 |156-14 1156-97 |157°81 |158-64 |159-4¢ 
O 157-77 |158-46 |159°14 |159°37 
14] Ee (150-67 |151°50 [152-33 |153-15 |153-98 |154°81 |155°64 |156-a7 |157-29 |158°12 
O 7-08 |157°77 |158°50 
16] Le |149°S9 |150-21 |151°03 |151-85 |152°67 |153-49 154-32 155-14 |155-96 |15678 
0} 155-31 {156-29 |157-26 
1a| Le |148°12 [148-93 |149°75 |150°56 |151-38 | 152-19 |153-01 |153°82 |154-63 |155°49 
) 154:83 |155°70 
We see that the observed reduction tre with the compu- © 
ted reduction much better than in either of the preceding cases. _ 
The change in the value of the rieneh due toa change © 
either of the barometer or thermometer is, however, a little less 
than that computed from the formula. 
e other e evated station selected is the Colle = Valdobbia, — 4 
s uated abou English miles south of Monte Rosa, atan — 
— of 2,485 meters above the sea, and the eee it selected 
comparison is Alessandria, distant about 70 English ae 
ae elevated 98 meters above the sea. The observations are— 
