HORARY OBSERVATIONS OF THE BAROMETER, THERMOMETER, &c. 



(Made at the Manse of the Parish of Abbey St. Bathan's, Berwickshire, Lat. 55° 52' N. Long. 2o 23' W. at 



I the height of about 450 feet above the sea, for the commencement of each hour per clock, beginning at 6 



o'clock in the morning of Monday the 21st September, and ending at 6 o'clock in the evening of Tuesday 



22d, thus extending over 36 hours, according to the suggestion of Sir John Herschel.) By the Rev. 



John Wallace. 



A.M. 



Noon, 

 P.M. 



47i 



49 



5lf 

 53i 



55i 



57 



58 



5n 



56i 



552 



53^ 

 5lf 

 50 



8 49 



Noon. 

 P.M. 



29-079 

 29-108 



29-142 



29-163 

 29-171 



29-187 



29-190 



29-202 

 29-199 

 29-199 



29-200 



29-205 



29-225 

 29-221 



29-232 



29-232 



29-226 



29-226 



29-220 

 29-210 



29-191 



29-180 



29-163 

 29-146 



29-132 



29-112 

 29-063 

 29-025 

 28-965 

 28-894 

 28-849 

 28-764 

 28-730 



28-685 



28-668 



^28-710 

 28-734 





W.N.W 



S. E. 



s.w. 



Remarks. 



Shifting. 

 E. S. E. 



S.W. 



E. 



S.WbyW 



S.W. 



S. S. E. 

 S.W. 



W.S.W 



E. S. E. 



•Calm, cloudless, except a bed of cirrostratus in SWn. horizon. 

 Calm so that wind cannot be noted ; cirrostratus gradually forming, 

 chiefly in southeastern qr. ; dark patches of cirrpstratus ; light hazy 

 clouds floating below from the southward. 

 Gentle breeze ; one or two fine plumous cirri in S.Wn. qr.; the bed 

 of cirrostratus in S.E. qr. advancing towards the zenith ; the sky 

 from the zenith to the horizon N.Wd. clear, except patches of cir. 

 — Gentle breeze ; cirrostratus increasing, in dark masses below. 

 Gentle breeze ; cirrostratus gradually disappearing ; some fine cirri 

 near the zenith, from S. S.W. to NNE; rocky cumuli in SW hor. 

 < Breeze increasing ; cirrostratus continuing to dissipate ; the rocky 

 l cumuli on S W hor. passing over to NE, cirri from SW to NE. 

 i Breeze decreasing ; cirrostratus in SE, cirri in NPj ; cumulostratus 

 \ forming in SW and pass over to NE with the wind ; light rain. 

 C Moderate breeze ; cirrostratus now veils the whole sky except Wn. 



< qr.; towards the zenith assuming a cirrocumulative aspect ; cumu- 

 C. lostratus disappearing ; large rocky cumuli in SE and N Wm hors. 

 C Moderate breeze ; cirrostratus rather denser, in some places passing 



< into cirrocumulus ; the same portion of N W qr. clear ; cumulo- 

 C. strati again forming in S.W. and passing over with the wind. 



C Moderate breeze ; cirostratus spread over the whole sky, possessing 



< a curdy cirrocvunulative form, and shewing appearances of polar- 

 C. ization SW to NE, cumulostrati disappeared, cumli still forming 

 C Gentle breeze ; cirrostratus still possesses the whole sky, and has 



< descended in the atmosphere ; a few rocky cumuli still in the 

 C. N W ; those in the SE have dissappeared. 



S Gentle breeze ; cirrostratus still lower in the atmosphere, and the 

 i^ curdy cirrocumulative nebiculae larger, rocky cumuli disappeared 

 — Almost calm ; the general character of formation same as last hour. 

 ( Light air ; cirostratus rapidly dissipating ; S & S W portions of the 

 ( heavens quite clear ; streaks of cirrostratus in N W & SE. 

 ^ Light air ; portions of darkish clouds resembling cirrostratus passing 

 ^ from S Wd.; the original stratum of cirrostratus has disappeared, 



< Light air ; same kind of clouds continue to pass over the sky from 

 \ SWd. Several caudate meteors observed. 



— So calm that the wind cannot be noted ; most of sky cloudless. 

 5 Very light breeze ; a few cirrostrative clouds passing over NWm. 

 t hor.; a light haze spread over the sky ; a few caudate meteors. 

 — Very light breeze ; a quantity of large black clouds passing from S W 

 — Light air ; a few long streaks of cirrostratus in NWm. horizon. 

 Light air ; cirrostratus spread over the whole sky ; dark cloud rising 



rapidly from ESE, and stretching towards the zenith. 

 Quite calm ; dark cirrostratus veiling the whole sky except a portion 



of the SErn horizon, which is clear of clouds. 

 Still quite calm ; cirrostratus rapidly dispersing, especially in the 

 NErn. quarter ; the SErn. horizon again overcast. 

 — Light air ; cirrostratus still veils the sky, except in NWn. qr. 

 C Quite calm below, but all along there has been a breeze above, which 

 ? is now much increased ; the cirrostratus has condensed, and covers 

 i_ the hills with a thick fog ; passing into the nimbus with light rain. 

 — Light breeze, a thin sheet of nimbus veils the sky, with some rain. 



-Brisk wind ; nimbus increasing ; a good deal of rain falling. 

 — Breeze freshening ; dense nimbus over whole sky, with much rain. 

 Strong and encreasing wind ; nimbus continues, with heavy rain. 

 Strong breeze ; dense fog on the surrounding hills ; almost fair. 

 Strong breeze, with dense wet fog. 

 — The same as last hour. 

 —Strong breeze ; fog gradually diminishing in density and dissipating. 



< Strong breeze ; nimbus breaking up rapidly, and changing into cir- 

 l rostratus, having near the zenith a cirrocumulative tendency. 



— Strong breeze ; cumulostrative clouds from SE passing over. 



C Moderate breeze ; a large nimbus has just passed from Sd. ; several 



•J large cirro-edged masses floating rapidly across the sky ; upper 



(_ stratum cirrostratus ; a fine rainbow visible. 

 ( Moderate breeze ; large masses of cumulostrative cloud psissingfrom 

 \ S. ; upper stratum of cirrostratus has nearly dis-appeared. 



