270 Mr. W. Brown on the Oscillations of the Barometer. 



Orkneys 



Belfast , 

 Armagh .. 



Shields 



Cork 



Bristol 



Plymouth.. 

 London .. 



Paris 



Christiania 



3016 

 30-25 

 30-48 

 3018 

 30-46 

 30-29 

 30-49 

 30-51 

 30-58 

 30-38 

 30-08 



30-37 



30-42 

 30-18 



30-53 

 30-38 



30-21 

 3011 



29-82 

 30-34 



30-35 

 30-43 



30-41 

 3014 



19. 



29-90 

 29-68 

 29-93 

 29-68 

 29-88 

 29-98 

 3013 

 30-28 

 30-23 

 30-30 

 30-00 



29-86 



29-77 

 29-92 



3006 



29-93 

 29-66 



29-64 

 29-73 



29-82 

 3001 



30-04 



29-82 



20. 



29-97 

 29-78 

 29-94 

 29-64 



»m 



29-76 



29-83 

 29-79 

 29-60 

 29-64 



29-91 



29-85 

 29-80 



29-77 



29-95 



29-80 



29-64 



29-86 



29-63 



29-50 

 29-56 



Orkneys ... 

 Glasgow ... 



Belfast 



Armagh ... 



Shields 



Cork 



Bristol 



Plymouth... 

 London ... 



Paris 



Christiania . 



21. 



29-95 

 29-82 

 30-01 

 29-74 

 29-90 

 29-84 

 29-83 

 29-78 

 29-80 

 29-51 

 29-56 



29-95 



29-89 

 29-83 



29-82 

 29-54 



29-77 

 29-62 



29-43 



29-78 



29-76 

 29-79 



29-63 

 29-56 



22. 



29-47 

 29-22 

 29-42 

 29-21 

 29-42 

 29-58 

 29-30 

 29-45 

 29-42 

 29-31 

 29-58 



29-42 



29-30 

 29-58 



29-28 

 2913 

 29-55 



29-39 

 2912 



29-21 

 29-27 



29-49 

 29-62 



29-30 

 29-56 



23. 



29-36 

 2917 

 29-46 

 2919 

 29-31 

 29-34 

 29-48 

 29-59 

 29-50 

 29-50 

 29-61 



29-32 



29-27 

 2910 



29-59 



29-30 

 2901 



28-70 

 2919 



2904 

 29-02 



29-33 

 29-63 



Orkneys .. 

 Glasgow .. 



Belfast 



Armagh .. 



Shields 



Cork 



Bristol 



Plymouth.. 

 London . . 

 Paris ..... 

 Christiania 



24. 



2911 

 28-71 



28-83 

 28-47 

 28-89 

 28-54 

 28-83 

 28-95 

 28-91 

 28-98 

 29-65 



28-79 



28-78 

 28-54 



28-92 



2908 



28-58 



28-40 



28-75 



28-75 

 28-87 



29-07 

 29-67 



25. 



29-04 

 28-63 

 28-74 

 28-47 

 28-80 

 28-79 

 28-75 

 28-83 

 2S-90 

 28-95 

 29-66 



28-82 



28-82 

 28-80 



28-88 



2910 



28-70 



28-61 



28-83 



28-94 

 2903 



29-08 

 29-58 



26. 



2910 

 28-76 

 28-97 

 28-73 

 2891 

 29-00 

 29-04 

 29 13 

 2909 

 29-07 

 29-58 



29-04 



2904 



29-17 

 29-57 



2910 

 28-90 



28-88 

 29-07 



29-24 



29-28 



29-28 

 29-60 



In the columns which follow, interposed with the text, I 

 have given the amount of the variations in lOOths of an inch 

 between the consecutive observations given in the preceding 

 tables, with the exception of those in which there are three 

 daily observations ; for the 3rd column always contains the 

 difference of the extreme observations of each day, so that in 

 casting the eye down the columns the variations may always 

 belong to the same periods, excepting when the time of the 

 observations varies a little from 9 o'clock ; care however must 

 be taken with regard to the first column to observe those 

 which include a period beginning at 3p.m. on the day previous 

 which is the case when there is no evening observation. 



For the sake of simplifying the diagrams as much as pos- 



