450 ae REPORT—1862. 
Taste 1Y.—Showing the Decrease of Temperature 
July 17. | July 30. | August 18. | August 20. 
Pac nore State of the Sky. 
sea. 
Cloudy. Clear. | Cloudy. Clear. Cloudy. 
ae Be ae 6S Gels ie Pes 2 
sla e)/2¢)2|2¢)e8]4] 421% 
From To <4 a 2 a 3 a < A < a 
ft. ft. ° ° ° ° ° ° ° ° ° ° 
28000 | 29000 : a wae ac age cee Ses eee 
27000|28000] .., aoe eee aaa aR ae ae aan ees eae 
26000|27000} ... =O. 7a: on aaa aE ea ogy & eee == eee 
|25000|26000| oo 12 ods on are sce tae age na «aa 
24000 |25000} 0o°o 1°3 sae oat Ke nee oo fa ive eee 
23000|24000] ov! 00 | Wee ae ae og sae age ese ase 
22000 |23000} o*l 12 re ons nas on o2 o"4 tee one 
21000 |22000| 0°6 I5 oe ee eee eee O72 08 eee see 
20000|21000] 02 14 aa ave ase eee oz o°8 nas eee 
19000 | 20000] 073 Il sla oes wie eee o4 I'0 ane oe 
18000| 19000] 05 12 BSc ase - oe Io I'o ae on 
17000] 18000] o2 1°6 Hr ae Sen ene r2 170 eee ove 
16000} 17000] 05 12 oe ane = eee 16 I'o wee eee 
15000 | 16000 I°o i5 A Fe sae ae 2'0 I°o eee we eee 
| 14000/15000| 0°6 1'0 ae 54 sep tee 2°0 12 eee eee 
13000|I4000} 1°4 ita a a ane eve eh 1°8 ee ese 
12000] 13000] 0°8 ton eae eae nee “or 2:1 2°5 aee oe 
II000|1I2000|] 1°7 15 nas — op ae I'9 27 ane 
10000] I1000| 2°0 Tool akere cae 1'°5 2°0 IS 28 : ene 
9000|Ioo00] 3:0 | ... |] ... cer 1°3 1:8 |) “2:2, |" 28 sue oe 
8000] gooo} 3:0 are ee Ar 1'2 2°2 20 24 eee oe 
7000} 8000} 4°5 = “on ces 1°8 2"0 2°6 a4 ae eve 
6000} 7000} 4°5 27 | 2°6 Ia | 2:6) | 26 3°3 eee tee 
5000| 6000} 42 2°7 14 I'5 30 2°2 4°0 ods eae 
4000] 5000] 4:8 2°6 18 27 2°5 a1 4:0 ea ae 3° 
3000 4000 48 2°4. 49 3°6 2°5 I'9 45 40 2°83 4 
2000} 3000/ 5°0 3°83 Sr 47 eee vee gr 50 30 ct 
1000] 2000] 43 59 4°0 54 oes -o 49 4°5 ove 
©} 000} 5°9 7°38 4:8 8-0 eee a 6°5 49 eee 
A glance at this Table shows that, without exception, the numbers at the 
lower elevations are very much larger, in all states of the sky, than those at 
the higher, and therefore that the changes of temperature are much larger 
near the earth, for equal increment of elevation, than far from it. 
Also by comparing the numbers at low elevations with cloudy and clear 
skies, those with the former are much smaller than those with the latter, 
and therefore the decrease of temperature with increase of elevation is larger 
with a clear than with a cloudy sky. 
By taking the mean of the results at every stratum of 1000 feet, omitting 
those belonging to July 17, we haye— 
Ascending. 
