172 



Hourly Meteorological Observations, April 7 — 9, 1845. 



Gbtt. 

 Mean 

 Time. 



7 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 



13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 



8 

 1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



9 



1 



2 



3 



4 



5 



6 



7 



8 



9 



Baro- 

 meter 

 at 32°. 



29-626 

 590 

 553 

 523 

 508 

 493 

 476 

 465 

 443 

 413 

 392 



29-359 

 324 

 288 

 270 

 236 

 220 

 202 

 175 

 163 

 144 

 129 

 122 

 107 

 077 

 062 

 043 

 031 

 041 

 033 

 027 

 028 

 019 

 009 

 005 



29-000 

 28-984 

 964 

 944 

 929 

 927 

 927 

 924 

 918 

 906 

 900 

 897 

 889 

 877 

 861 

 860 

 861 

 868 

 879 

 894 

 901 



Thermometers. 



Wind. 



Clouds 













Maximum 





8c.:C.-s.:Ci., 



Sky 



Dry. 



Wet. 



Diff. 



force in 

 Ih. 10-=. 



From 



moving 

 from 



:louded 



53-0 



47-4 



5-6 



lbs. 



0-2 



lbs. 



0-1 



pt. 

 4 



pt. pt. 

 20 : — : 



pt. 



0— 10. 



4-0 



53-6 



48-4 



5-2 



0-4 



0-3 



6 



18: 



— : 



— 



3-5 



53-7 



48-3 



5-4 



0-5 



0-5 



4 



19: 



— : 



— 



7-0 



54-1 



48-4 



5-7 



10 



M 



14 



21 : 



— : 



— 



4-0 



520 



47-3 



4-7 



1-3 



1-3 



15 



20: 



— : 



— 



40 



48-2 



45-2 



3-0 



0-7 



0-3 



15 





3-0 



450 



42-7 



2-3 



0-3 



0-4 



17 





2-0 



42-6 



41-0 



1-6 



0-5 



0-4 



17 





2-0 



40-5 



39-4 



1-1 



0-5 



0-1 



17 





0-0 



39-4 



38-3 



1-1 



0-1 



01 



17 





0-0 



38-8 



37-6 



1-2 



0-2 



0-0 







30 



40-3 



38-4 



1-9 



04 



0-3 



18 





30 



39-0 



370 



2-0 



0-2 



00 







9-5 



40-1 



37-6 



2-5 



0-8 



0-4 



15 





7-0 



40-6 



37-9 



2-7 



0-3 



0-2 



18 





100 



41-6 



38-9 



2-7 



0-6 



0-3 



18 





100 



41-7 



39-5 



2-2 



0-5 



0-2 



18 



— : 



20: 



— 



10-0 



42-0 



40-4 



1-6 



0-6 



0-4 



17 



19 



— 



18 



9-9 



46-3 



44-0 



2-3 



0-5 



0-6 



17 



20: 



21 



— 



9-9 



47-1 



44-7 



2-4 



1-0 



0-5 



18 



20 



16 



— 



9-7 



48-7 



45-2 



3-5 



0-9 



0-6 



18 



20- 







— 



9-9 



47-3 



43-3 



4-0 



1-1 



0-7 



21 



23 



— 



— 



9-9 



47-8 



43-0 



4-8 



0-8 



0-4 



20 



— 



23 



— 



10-0 



47-2 



43-6 



3-6 



0-7 



0-4 



24 



22 







— 



100 



48-7 



45-4 



3-3 



0-7 



0-7 



20 



23 







— 



9-9 



50-0 



46-7 



3-3 



1-2 



0-3 



18 



24 



— 



— 



9-5 



490 



450 



4-9 



11 



1-2 



18 



23 



— 



— 



8-5 



46-3 



43-0 



3-3 



2-9 



1-8 



21 



23 



— 



— 



80 



44-8 



41-7 



3-1 



2-2 



1-6 



19 



— 



23 



— 



7-5 



42-8 



400 



2-8 



1-0 



0-5 



21 



— 



23 



— 



1-8 



40-3 



381 



2-2 



0-5 



0-3 



20 





0-8 



38-4 



37-0 



1-4 



0-9 



0-4 



18 





0-5 



35-9 



34-6 



1-3 



0-3 



00 







0-1 



35-2 



34-1 



1-1 



00 



00 



22 





0-2 



35-0 



34-2 



0-8 



0-4 



0-1 



21 





0-2 



32-8 



32-1 



0-7 



0-3 



0-0 



10 





00 



32-0 



31-6 



0-4 



0-2 



0-0 



28 





0-2 



32-4 



31-8 



0-6 



0-2 



0-1 



18 





0-0 



321 



31-3 



0-8 



01 



0-1 



20 





0-1 



29.8 



29-4 



0-4 



0-0 



0-0 



20 





0-4 



28-6 



28-5 



0-1 



0-1 



0-0 



16 





0-5 



31-6 



31-2 



0-4 



0-2 



0-0 



8 





0-2 



34-5 



34-0 



0-5 



0-0 



00 



4 





0-5 



38-0 



36-7 



1-3 



0-0 



0-0 



16 





0-8 



40-8 



39-2 



1-6 



0-1 



0-1 



17 







:22 



: — 



30 



44-7 



41-7 



3-0 



01 



01 



15 



8 



: 



: — 



2-5 



46-6 



40-9 



5-7 



0-1 



01 



2 



17 



; 



: — 



3-5 



47-7 



41-3 



6-4 



0-1 



0-1 



10 



10 



: — 



:21 



4-0 



48-4 



42-0 



6-4 



0-2 



0-2 



6 



16 



: — 



: — 



7-5 



49-2 



43-2 



6-0 



0-1 



iO-3 



8 



4 



: — 



: — 



7-5 



48-3 



42-0 



6-3 



0-8 



0-3 



7 



4 



: — 



: 



3-0 



46-8 



40-6 



6-2 



0-6 



0-7 







1-5 



45-3 



39-7 



5-6 



0-5 



0-2 



7 





1-5 



43-7 



38-4 



5-3 



0-4 



0-2 



6 





1-0 



40-6 



38-0 



2-6 



0-4 



0-2 



4 





1-5 



390 



36-9 



21 



0-2 



0-0 



2 





9-9 



Species of Clouds and Meteorological Remarks. 



hazy. 



very hazy on horizon. 



very hazy. 



id. 

 dense haze 



Loose cumuli and scud 



Id.; 



Id.; 



Id.; 



Id.; 

 As before ; sun blood-red 

 Haze on horizon, &c. ; as before. 



Id. 



Id. 

 Hazy on horizon. 

 Thin cirri ; stars dim. 



Thin cirri ; stars dim. 



Id., radiating from S. 



Id. ; sky in zenith. 



Cirrous clouds. 

 Cirro-strati ; cirri. 

 Loose cirro-strati ; rain""-* 

 Scud ; wooUy cirri. 



Id. ; cirro-cumulo-strati. 



Id. ; loose cirro-strati. 



Id. ; cirrous mass ; cirro-strati ; cumuli. 



Id. ; id. ; id. ; id. 



Cirro-stratous scud ; cirrous mass. 

 Scud ; cirrous mass ; shower since O"*. 

 Scud and loose cumuli ; cirro-strati ; cirri 



e 



[at 1^ mile. 



objects invisible 







showers. 



Id. ; id. ; nimbi. 



Scud ; cumuli to N. ; nimbi. 

 Id. ; id. ; id. 



Cirro-stratous scud ; nimbi ; cirri ; cirro-strati.* 



Id. ; id. ; id. ; piles of cumuli. 



Id. ; cirro-cumuli. 



Id. ; cirro-strati. 



Streaks of cirro-strati ; very clear.* 

 Patches of cirro-strati to E. and W. 

 Patches of cirro-strati. 



Clear. 



Patches of cloud ; stars rather dim. 

 Clear. 



Id. ; cirro-strati to NE. 

 Cirro-strati and haze to E. 



Loose scud to S. ; cirro-strati and cirrous haze to E. 

 Scud ; cumuli ; cirro-strati ; cirri on horizon. 



As before ; hazy to E. G 



Cirro-cumulo-strati ; cir.-str. to S. ; haze on E. hor. G 

 Id. ; cumuli to N. 



Loose cumuli ; cumuli ; cirro-strati ; haze. G 



Cumuli ; cirri. Q 



Id. ; cumulo-strati ; cirri ; clouds moving variously. 

 Electric-looking cumuli and cumulo-strati. 9 



Id. 



As before ; clouds scarcely moving ; haze on horizon. 

 Cumuli ; cirro-strati ; haze. G 



Cum.-str. and cir.-str. to S. ; brownish haze to W, 

 Cirro-strati and haze round horizon. 

 Cirro-strati on horizon, chiefly to NE. 

 Scud. 



The direction of the wind is indicated by the number of the point of 

 motions of the three strata of clouds, 8c. (scud), C.-s. (cirro-stratus), and 

 April 7* 31". The clouds seem to be acted on by various currents. 

 April S* 181^ 8J">. The sun just above the horizon. 

 * See additional Meteorological Notes after the Hourly Meteorological Observations 



the compass, reckoning N. = 0, E. = 8, S. = 16, W. = 24. The 

 Ci. (cirrus), are indicated in a similar manner. 



