264 



Hourly Meteorological Observations, September 2 — 4, 1844. 



Gbtt. 

 Mean 

 Time. 



d. h. 



2 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 



3 

 1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 



13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 



4 

 1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 



13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 



Baro- 

 meter 

 at 32°. 



in. 



30-084 

 075 

 062 

 053 

 054 

 059 

 067 

 075 

 082 

 079 

 070 

 066 

 068 

 059 

 055 

 054 

 061 

 059 

 080 

 084 

 083 

 090 

 082 



30-073 

 062 

 058 

 051 

 047 

 051 

 058 

 070 

 073 

 065 

 061 

 058 

 051 

 042 

 030 

 018 

 013 

 005 

 006 

 Oil 

 021 

 017 

 015 

 003 



30-003 

 29-996 

 981 

 970 

 957 

 952 

 945 

 939 

 933 



Thermometers. 



Dry. 



Wet. 



46-3 



46-6 



44-0 



45-6 



47-1 



49-9 



51-7 



53-6 



53-8 



58-2 



59-7 



59-7 



60-8 



59-1 



57-7 



56-5 



55-9 



54-5 



53-0 



52-0 



53-6 



53-3 



53-6 



53-4 



53-7 



54-6 



54-6 



54-7 



54-7 



54-7 



550 



56-0 



57-8 



59-2 



60-2 



60-4 



59-8 



59-7 



58-3 



57-5 



55-4 



55-0 



55-0 



55-1 



55-0 



55 



54-6 



54-3 



54-4 



54-8 



54-2 



540 



54-1 



54-8 



55-9 



57-3 



Diff. 





 

 

 

 

 

 

 

 

 2 

 3 

 6 

 6 

 3 

 3 

 4 



t* 

 2 



41 

 





 

 





 



1 

 1 



1 

 1 

 1 

 1 



2 

 3 

 4 

 4 

 5 

 5 

 6 

 6 

 5 

 t4 



2 

 2 

 1 

 1 

 1 



1 

 1 

 1 

 1 

 1 

 1 

 

 1 

 2 



Wind. 



Maximum 

 force in 

 IX 10 m . 



lbs. 



lbs. 









 





 

 

 

 



1 

 1 



2 

 6 

 6 



9 

 7 

 5 

 4 

 6 

 3 

 1 

 2 

 1 

 2 



2 

 2 

 3 

 1 



3 



3 



2 

 2 

 3 

 9 

 4 

 7 

 6 

 6 

 7 

 6 

 8 

 6 

 4 

 3 

 3 

 3 

 3 

 3 



2 

 3 

 2 

 3 

 4 

 3 

 2 

 2 



Prom 



pt. 

 20 

 20 



5 

 6 

 8 

 2 

 28 

 4 

 2 

 2 

 6 

 4 

 4 

 8 

 5 

 5 

 1 

 4 

 6 

 6 



6 

 6 

 4 

 4 

 6 

 6 

 4 

 3 

 4 

 6 

 5 

 6 

 5 

 6 

 5 

 5 

 6 

 4 

 4 

 3 

 2 

 2 

 4 

 4 



4 

 3 

 3 

 2 

 3 

 4 

 4 

 4 

 5 



Clouds, 



Sc.:C.-s.:Ci. ; 



moving 



from 



pt. pt. pt. 



10: — : — 



i 11 



11 

 12 



I 7 



8 : 12 



10: — : — 



6: — : — 



10: 





Sky 

 clouded 



o—io. 

 0-2 



Species of Clouds and Meteorological Remarks. 



Cirri ; mist becoming thicker. 



Thick fog ; lunar corona. } 



Id. ; id. 



Id. ; id. 



Fog, objects invisible at 100 yards. 



Id., id. 



Id., id. at 200 yards. 



Fog, objects invisible at 300 yards ; loose scud above. 



Id. 1 mile ; id. 



Loose cumuli ; haze on E. horizon. 



Cumuli ; haze on horizon. 



Id. ; id. 



Id. ; cumuli ; haze on horizon. 



Loose cumuli ; scud, cumuli, haze on horizon. 



Scud ; hazy to E. 



Id. ; haze on E. horizon. Q 



Id. © 



Id. © 



Scud passing rapidly, very dense to X. 



Scud on horizon. 



Scud. 



Loose scud. 



Id. } 



Loose scud. 



Id. 



Cirro-cumulous scud. 



Scud ; cirro-cumulous scud. 



Nearly homogeneous. 



Id. 



Id. 



Scud. 



Stratous scud ; loose cirro-cumuli. 9 



Id. 



Fatches of scud ; hazy on horizon. 



Id. ; id. G 



Id. ; id. 



Loose cumuli ; cumuli ; haze on horizon. 



Patches of scud ; haze on E. horizon. 



Id. ; haze ; cirri to S. 



Cirro-strati ; haze on E. and S. horizon. 



Cirro-strati and loose cumuli on S. and E. horizon. 



Cirro-stratous scud. 



Thick scud ; sky to N. 



Densely clouded. 



jjarK. 



Id. 



Scud and haze ; lunar corona. 



Scud and haze. 

 Id. 

 Id. 

 Id. 

 Misty scud. 

 Id. 

 Id. 

 Loose scud ; cirro-cumulous scud 

 Id. ; mottled cirri. 



mottled cirri. 



The direction of the wind is indicated by the number of the point of the compass, reckoning N. = 0, E. = 8, S. = 16, W. = 24. 

 motions of the three strata of clouds, Sc. (scud), C.-s. (cirro-stratus), and Cir. (cirrus), are indicated in a similar manner. 



Sept. 4 d h . Observation made at h 6 m . 



Sept. 4 d 3£ h . New floss silk put on wet-bulb thermometer : projecting sides and top put on thermometer board for the purpose of pre- 

 venting radiation on clear nights. - 



