

INTER-RELATIONS OF BAROMETRIC PRESSURE. 



523 



IBLE I. — Showing for each of the classes into which the observations have been sorted — (1) the Mean Monthly Sea-Level 

 Pressure at Fort-William ; (2) the Mean Temperature at both Observatories ; (3) the Mean Difference of Temperature at 

 both Observatories ; (4) the Mean Sunshine in hours at both Observatories ; (5) the Mean Rainfall in inches at both 

 Observatories ; and (6) the Mean Depression of the Wet Bulb at both Observatories. 



Class I. — The Mean Monthly Sea-Level Pressure at Fort-William. 



roup I. — 



All Different Temperatures observed . 



roup III. — 



Different Temperatures, 12 o- or less . 



roup IV. — 



Different Temperatures, 18 o, or greater 



•oup I. — 



All Different Temperatures observed . 



oup III. — 



Different Temperatures, 12° - or less . 



oup IV. — 



Different Temperatures, 18°'0 or greater 



Jan. 



Feb. 



29-863 i 29-845 



30-171 

 29-843 



30-115 

 29-791 



Mar. 



Apr. 



May. 



June. 



July. 



29814 



29-894 



29 969 



29-963 



29-916 



30-158 



30-167 



30-206 



30-165 



30-070 



29 -824 



29-901 



29-907 



29-816 



29-903 



Aug. Sept. 



Oct. 



Nov. 



Dec. 



i 

 29 835 29-879 



29-747 



29-718 



29-625 



30-200 30-198 



30-173 



30-231 



30-003 



29-831 | 29-832 



29-775 



29-785 



29-850 



Class II. — Mean Monthly Temperature at both Observatories. 



Class III. — Mean Daily Sunshine in Hours. 



'.oup I. — 

 Mean Daily 



do. 

 'oup III.— 

 \Iean Daily 



do. 

 <)upIV.— 

 Mean Daily 



do. 



Diff. Temp., all observed, Ben Nevis 

 do. do. Fort-William 



Diff. Temp., 12 o, or less, Ben Nevis 

 do. do. Fort-William 



Diff. Temp.,18°'0 or greater, Ben Nevis 

 do. do. Fort-William 



Class IV. — Mean Daily Rainfall in Inches. 



(mp I. — 



lean Daily 



do. 

 Up III.— 

 lean Daily 

 do. 

 Cup IV.— 

 lean Daily 

 , do. 



Diff. Temp., all observed, Ben Nevis 

 do. do. Fort-William 



Diff. Temp., 12° "0 or less, Ben Nevis 

 do. do. Fort-William 



Diff. Temp., 18°'0 or greater, Ben Nevis 

 do. do. Fort- William 



Class V. — Mean Monthly Depression of Wet Bulb. 



Gup I. — 



)ep. Wet, 



I do. 

 Gup III.— 



»ep. Wet, 



1 do. 

 Gup IV.— 



»ep. Wet, 



1 do. 



Diff. Temp., all observed, Ben Nevis 

 do. do. Fort- William 



Diff. Temp., 12° -0 or less, Ben Nevis 

 do. do. Fort-William 



Diff. Temp., 18° -0 or greater, Ben Nevis 

 do. do. Fort- William 



0-2 

 1-7 



0-6 

 2-2 



0-6 

 26 



0-7 

 3-3 



1-3 



4-0 



1-4 

 3-9 



1-0 

 3-4 



0-8 

 3-0 



1-1 

 2-8 



0-5 

 2-1 



07 

 2-0 



0-6 

 2-0 



1-0 

 0-9 



1-7 

 1-6 



2-9 

 2-5 



3-2 

 3-5 



3-8 

 4-4 



3-4 

 3-5 



2-6 

 3-1 



2-6 



2-7 



4-0 

 2-4 



2-4 



1-7 



2-4 

 1-3 



1-7 

 1-0 



o-i 



2-6 



o-o 



2-7 



0-2 

 3-1 



0-3 

 4-0 



0-3 

 4-2 



0-3 



4-4 



0-4 

 4-5 



o-i 



4-0 



o-i 



3-5 



o-i 



3-2 



o-o 



3-0 



00 

 3-1 



Vear. 



29-839 

 30-157 

 29-837 



30°-8 



31°-5 



32°-4 



37°-2 



41°' 6 



48°3 



49°-7 



49°-2 



45°8 



38°-8 



36°0 



32°6 



28-6 



29-2 



36-8 



42-7 



47-4 



53-1 



540 



55-1 



50-4 



42-3 



35-5 



30-8 



28-4 



28-1 



27-8 



33-7 



37-4 



43-0 



45-3 



45-5 



42-1 



35-8 



34-0 



33-7 



39-5 

 42-2 

 36-2 



0-9 



1-8 



2-5 



3 2 



4-7 



4-6 



3-0 



2-2 



2-3 



1-9 



1-3 



0-9 



0-9 



1-9 



3-7 



5-0 



6-3 



6-1 



4-4 



4-0 



37 



2-8 



1-2 



0-7 



2-5 



4-5 



6-5 



7-5 



10-3 



8-9 



6-3 



50 



5-7 



5-0 



3-6 



21 



1-0 



3-4 



5-1 



7-0 



9-0 



8-8 



5-4 



5-1 



66 



4-0 



2-0 



0-8 



0-4 



1-1 



2-5 



2-3 



2 7 



2-0 



1-0 



0-9 



0-6 



0-3 



0-2 



0-4 



1-1 



23 



3-8 



5-5 



5-3 



5-6 



4-6 



2-9 



3-6 



2-4 



0-9 



0-8 



2-4 

 3-4 



5-7 

 4-8 



1-2 

 3-2 



•54 



•34 



•41 



•25 



•25 



•25 



•34 



•44 



•53 



•43 



•44 



•58 



•23 



•16 



•16 



•10 



•11 



•12 



•15 



•21 



•25 



•24 



•22 



•30 



•09 



•10 



•18 



•05 



•09 



■11 



•25 



•46 



•26 



•15 



•07 



■16 



•06 



•07 



■09 



•04 



•05 



•06 



•11 



•23 



•11 



•07 



•04 



■10 



•37 



•41 



•19 



•24 



•24 



•30 



•31 



•37 



•48 



•48 



•58 



•53 



•13 



•12 



•07 



•08 



•07 



•10 



•08 



•11 



•18 



■20 



•20 



•15 



•40 

 •19 



•16 



•09 



•38 

 •12 



0-8 

 2-8 



2-6 

 2-4 



0'1 

 3-5 



