ATMOSTHERIC PRESSURE. 



215 



Readiugs of the barometer and attached thermometer at Port Foulke, Smith Strait 



July, 1861. 



Day of the 

 moutli. 



2" 



4 



6 



8 



10 



Midnight. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



2 9'". 3 64 

 .428 

 .528 

 .776 

 .700 

 .424 

 .649 

 .886 

 30.058 

 29.598 

 .928 

 .776 

 30.129 

 29.960 

 .893 

 .898 

 .978 

 .808 

 .673 

 .634 

 .682 

 .563 

 .648 



.682 

 .928 

 .870 



.894 



.900 



30.054 



58° 



57 



58 



58 



58.5 



54 



58.5 



63 



61 



58 



56 



56 



57 



54 



54 



49 



50 



53 



66 



54 



70.5 



67 



73 



76 

 75 

 54.5 



61 

 54 



57 



29'".372 

 .466 

 .570 



.702 

 .498 

 .644 



30.050 

 29.572 

 .926 

 .988 

 30.057 

 29.928 

 .904 

 .985 

 .900 

 .838 

 .6.35 

 .618 

 .640 

 .528 

 .616 

 .650 

 .684 

 .966 

 .880 



.934 

 .900 

 .957 



58° 



55 



56 



56.5 

 59.5 

 58 



59.5 



58 



58 



56 



57 



54 



53 



50 



45 



51 



64 



51 



70 



73 



77 



78 



79 



72 



55 



71 

 54 

 58 



29'".370 



.452 



.584 



.762 



.656 



.526 



.626 



.900 



30.038 



29.602 



.924 



.992 



30.058 



29.900 



30.033 



29.878 



.942 



.855 



.681 



.672 



.590 



.650 

 .715 



.788 

 .880 

 .870 



.910 



.985 



30.070 



58° 



53 



55 



56 



57 



58 



57 



63 



57 



57 



58 



58 



57 



55 



46 



51 



51 



51 



84 



53.5 



63 



64 

 74 

 78 

 65 

 55 



72 

 54 

 61 



29'".342 

 .424 

 .612 

 .820 

 .636 

 .516 

 .617 

 .904 



30.034 



29.900 

 30.044 

 .056 

 29.886 

 .950 

 .968 

 .876 

 .820 

 .618 

 .642 

 .656 

 .500 

 .614 

 .670 

 .750 

 .882 

 .930 

 .750 

 .848 

 .970 

 .900 



56° 



56 



62 



58 



56 



57 



56.5 



58 



59 



57 



60 



57 



55 



47 



50 



51 



51 



73 



50 



70 



72 



57 



65 



72.5 



62 



55 



53 



72.5 



50 



56 



29'^346 

 .418 

 .608 

 .784 

 .546 



.612 



.904 



30.062 



29.652 



.820 



30.052 



29.888 



.878 



30.044 



29.954 



.750 



.635 



.704 



.608 



.700 



.700 



.650 



.756 



.938 



.850 



.764 



.884 



30.000 



29.962 



55° 



58 



60 



56.5 



53 



55.5 



57 



58 



54 



54 



56 



55 



46 



50 



51 



45.5 



63 



55 



60 



76 



55 



72.5 



69.5 



61 



54 



55.5 



65 



50 



52 



2 9'". 884 

 .950 

 .933 

 .924 

 .750 

 .592 

 .718 

 .570 

 .521 

 .700 

 .620 

 .758 

 .936 

 .830 

 .758 

 .868 

 30.005 

 29.863 



53° 



45.5 



52 



48 



48 



62.5 



53 



76 



72 



55 



73 



84 



58 



54 



56 



58 



53 



51 



Means 



29.768 



59.5 



29.772 



60.0 



29.783 



59.6 



29.767 



58.4 



29.776 



57.0 





Notes to the iweceding Daily Becord. 



September. To obtain the monthly means for the hours midnight, 2, 4, and 6 A. M., the following- 

 process was adopted : The monthly means for the hours 8, 10, noon, 2, 4, 6, 8, 10 P. M., after supply- 

 ing the few omissions by simple interpolation, were found =29™. 686 at 32°; for the same hours the 

 mean for the days September 12 to September 30 =29™.695 at 32°; hence the correction to the 

 mean for each of the hours midnight, 2, 4, and 6 A. M., = — 0'". 009, which renders the monthly 

 averages for each observing hour strictly comparable. The few omissions in the last nineteen days 

 for the hours from midnight to 6 were previously supplied by simple interpolation. 



October. The monthly means for midnight, 2, 4, 6 A. M., were found by the same method as in 

 preceding month ; they depend on eight days of observations. 



January to June. The occasional blanks in the record were supplied by interpolation. 



July. The same principle of interpolation was applied for the hours midnight, 2, 4, 6 A. M., as in 

 preceding September or October. 



