20 J.D. Everett on Reducing Observations of Temperature. 
those in the third by taking the difference between the value of 
E, for each particular station, and its value for the mean of all, 
and Phi it into days at the rate of 1° to 1, day, (since 
: 72: 73.) 
360: 
The siancbers in the fifth column are proportional to vom - 
rmula 
the second, and have been obtained from 
them by the 
log. A, + ‘1099= log. n, (since ‘1099 is the logarithm of 1° 2879.) 
Taste I.— Results for three years, 1856-8. 
Days iff>r be- 
Stations. x Mette ot ora > ease i A and 
9 1 1 Canc: sine cold half, 
Stornoway ........ 4674 8°99 5° 34’ — 38 11°6 
Cu lloden Pee eek | 475 10°17 80° 57’ + 16 13°1 
BURY vs os vata s bins os 472 10°33 79° 24’ + 01 13°3 
Castle Newe.......] 44°2 10°83 80° 29’ +12 13°9 
oe eee 44°9 10°89 107. 3 - 02 140 
rdeen 45°9 10°69 78° 50! mee 13°8 
Fettercairn ..... o--| 469 11°56 83° 29° +41 14°9 
~oreogge wedererese 46°6 11°09 19° 53’ + 0°5 14°3 
BAITY 2 vcsscectess| STF 10°54 718° 24' = 10 13°6 
I ettins 45'8 1°20 80° 39/ + 13 14°4 
Callton Mor 47'2 10°37 80° 87’ + 1°3 13°4 
Greenock 484 10°97 ogy! — 2-7 14°1 
Baillieston ? 46°6 11°59 80° 28’ +11 14°9 
Edinburgh......... 49-0 10°71 fg baa? =~ 28 13°38 
CULL. 2s eaciecne tc 48°3 12°02 79° 95! +01 15°5 
East Linton........ 47°3 0°66 76° 16’ natn k 37 
Berti ek eae 47°0 O74 T1° 437 re 13°8 
ae ee coos! 46°2 1°55 83° 56’ +47 4°9 
Thirlestane ..,.. 45°1 1°83 80° 46’ +14 52 
Milnegraden .......| 47°0 11°08 78° 43’ — 06 4°3 
Bowhill ....... yess) 44°2 1:17 | 82° 9/ + 29 4°4 
Makerstoun........ 46°8 19°65 Lal tate xs -— 20 3-7 
Drumlanzig........} 47-0 11°96 i hes +17 L5°4 
oe bb's aie 46°5 10°85 81>. 5’ +18 14°0 
Fain ws-.| 467 | 10°94 | 79° 20’ [4-1 
TasLe Il.—Results for single years. 
pon Values of Ey. Values of A,. 
1856. __|__ 1857 1858. 1856, , 1857. ) 1858. 
Bressay (Shetland). . peed (oe Me: Jee ay! wee 78 86 
Sandwick (Orkney) .| ....... | 629 2’ | 75° 49/ ws 86 | 83 
‘nen send OIE Td ced a i3° 30" | 84° 19") ey eT ee 
Stornoway........ «fp B12 SO? | AE" a) Oe 81 ae ee 
DONOR siesccy, [BOP 20’ | 74° 56 87° 25° 98 104 | 104 
East Linton =|. 16°... 4’ | 68°. 27) 1 eee rons ie ‘we 
PRC i ie od ie 70° 66’ |. 62° 10’ |. Ba" 40° eee : : 
ee ee ee ee foal 4! eee eee a ee ae pee! 
To find the centres of the warm and cold halves of the year, 
The mean value of E, for all the 
reduce to the beginning of the year, 
subtract 15°, since our reckoning has been taken from the mid- 
eee re . See - ~ Se ERD as a EES A SEN OP SN ROE eee ee ADIN. SER RN Se PEP EEA Me ein Seno See POEL YR ES 
