176 



Hourly Meteorological Observations, April 17 — 19, 1845. 







Thermometers. 



Wind. 











~~~ 



Gott. 

 Mean 

 Time. 



Baro- 

 meter 

 at 32°. 







C 



louds 



, 







Dry. 



Wet. 



Diff. 



Maximum 

 force in 



Sc: 

 From 



C.-s. 

 ovin; 

 from 



Ci., Sky 

 T clouded. 



Species of Clouds and Meteorological Remarks. 















Ih. 



lO"". 













d. h. 



in. 



■> 



o 



o 



lbs. 



ns. 



pt. pt. 



pt. 



pt. 0—10. 







17 5 



30-187 



58-2 



51-5 



6-7 



0-3 



0-3 



5 — : 



29: 



— 6-0 



Cirro-cumulo- strati ; cirro-strati ; haze. 



G 



6 



172 



56-8 



50-1 



6-7 



0-3 



0-1 



7 





0-5 



Cirri ; cirro-strati and haze on horizon. 



G 



7 



167 



560 



504 



5-6 



0-2 



0-1 



5 





1-0 



Bank of cirro-strati to E. ; cirri. 



Q 



8 



172 



53-8 



49-2 



4-6 



0-1 



0-1 



6 — : 



1 : 



— 10-0 



Cirro-stratous scud. 





9 



167 



51-7 



48-2 



3-5 



0-2 



0-1 



4 — 



2: 



— 9-0 



Id. 





10 



167 



49-3 



46-0 



3-3 



0-1 



0-0 



4 — 



2: 



— 90 



Cirro-cumulo-strati ; lunar corona. 



} 



11 



166 



48-4 



45-9 



2-5 



0-1 



0-0 



4 — 



2: 



— 100 



Cirro-strati ; cirro-cumulo-strati. 



> 



12 



164 



48-4 



46-3 



2-1 



0-0 



0-0 







10-0 



Id. ; id. 





13 



30-155 



47-6 



45-3 



2-3 



0-0 



0-0 



4 





100 



Cirro-strati ; cirro-cumulo-strati. 





14 



143 



47-8 



45-7 



2-1 



0-0 



00 









100 



Cirro-cumulo-str ; cirro-strati lying in ridges N. 



toS. 



15 



138 



48-0 



46-0 



2-0 



0-0 



0-0 







10-0 



Homogeneous. 





16 



126 



47-2 



45-9 



1-3 



00 



0-0 







9-8 



Scud and cirro-strati broken up. 





17 



120 



47-5 



45-8 



1-7 



0-0 



0-0 



2 





10-0 



Thick cirro-strati. 





18 



121 



47-7 



461 



1-6 



0-0 



00 



— 



2 



— 100 



Thick rippled cirro-strati. 





19 



124 



48-3 



46-8 



1-5 



0-0 



00 



2 





100 



Id. 



. 



20 



122 



50-2 



48-1 



21 



01 



00 



4 





100 



Id. 



< 



21 



118 



51-9 



49-7 



2-2 



00 



0-0 



8 





100 



Cirro-strati ; cirrous mass. 





22 



119 



52-4 



49-8 



2-6 



01 



01 



6 — 



2 



_ 10-0 



Id. ; id. 



1 



23 



122 



52-3 



49-3 



3-0 



0-2 



0-3 



5 — 



3 



— 10-0 







IS 



120 



54-2 



51-2 



30 



0-3 



0-2 



7 — 



4 



— 10-0 



Cirro-stratous scud. 



' 



1 



119 



53-5 



51-2 



2-3 



0-3 



0-3 



7 - 



5 



— 10-0 



Id. 



, 



2 



111 



54-3 



51-4 



2-9 



0-6 



0-5 



5 5 



— 



— 10-0 



Scud. 





3 



107 



54-0 



51-0 



3-0 



0-6 



0-4 



5 5 



— 



— 100 



Id. 





4 



093 



53-6 



51-0 



2-6 



0-4 



0-3 



7 5 



— 



_ 100 



Id. 



^ 



5 



089 



53-6 



51-4 



2-2 



0-4 



0-3 



4 5 



— 



— 9-8 



Misty scud breaking. 





6 



083 



51-3 



49-9 



1-4 



0-3 



0-2 



6 5 







— 10-0 



Scud ; cirro-strati. 



1 



7 



090 



48-3 



47-4 



0-9 



0-8 



0-4 



4 





100 



Id. ; id. ; mist at 3 miles. 



1 



S 



105 



44-6 



44-2 



0-4 



0-6 



0-2 



4 





10-0 



Scotch mist at 1 mile. 



4i 



9 



115 



44-0 



43-6 



0-4 



0-4 



0-4 



5 





10-0 



Id. ; light drizzle. 



1 



10 



118 



43-0 



42-6 



0-4 



0-3 



0-2 



3 





10-0 



Scud. ; light drizzle. 



^ 



11 



115 



42-7 



41-9 



0-8 



0-1 



0-0 



4 





10-0 



Id. 





12 



111 



42-4 



41-0 



1-4 



0-1 



01 



3 





10-0 



Id. 





13 



30-103 



42-3 



40-9 



1-4 



0-1 



01 



2 





100 



Scud. 





14 



095 



42-2 



40-8 



1-4 



0-1 



0-0 



8 





10-0 



Id. 





15 



084 



41-9 



40-6 



1-3 



0-1 



0-0 



4 





100 



Id. 





16 



075 



41-4 



40-3 



1-1 



0-2 



00 









100 



Id. 





17 



074 



41-4 



40-2 



1-2 



0-0 



0-0 



30 





100 



Cirro-stratous scud ; cirro-strati ; cirri. 





18 



071 



40-4 



39-4 



10 



00 



00 



4 — 



2 



: — 8-5 



Cirro-cumuli ; cirro-strati ; woolly cirri ; cirrous 



haae. 



19 



077 



41-3 



40-6 



1-3 



0-1 



0-0 







10-0 



Thick cirro-stratous scud and cirro-strati. 





20 



080 



44-1 



42-6 



1-5 



0-0 



00 







10-0 



Homogeneous mass of cirro-strati ? ; patches of scud. | 



21 



072 



46-7 



44-3 



2-4 



0-2 



0-4 



2 4 



: — 



:— 9-0 



Misty scud ; cirro-stratous scud ; slightly foggy. 



e 



22 



071 



48-3 



45-1 



3-2 



0-4 



0-2 



5 4 



: 



:— 100 



Thick scud. 





23 



061 



50-2 



46-7 



3-5 



0-5 



0-5 



3 4 



: — 



:— 90 



Scud ; loose cumuli. 



e 



19 



054 



52-0 



47-9 



4-1 



0-6 



0-5 



4 4 



: — 



:— 4-0 



Id. ; id. 







1 



048 



51-3 



46-7 



4-6 



0-7 



0-7 



5 





1-5 



Id. ; id. 







2 



045 



52-1 



47-7 



4-4 



1-0 



0-6 



7 





0-5 



Patches of scud. 







3 



031 



51-2 



46-6 



4-6 



1-2 



0-7 



11 





0-2 



Id. 







4 



023 



51-4 



47-0 



4-4 



10 



0-6 



7 





0-1 



Id. 







5 



022 



50- 1 



45-7 



4-4 



0-7 



0-6 



6 





0-1 



Cirro-strati and haze on horizon. 



e 



6 



020 



48-8 



45-0 



3-8 



0-9 



0-4 



4 





0-1 



Id. 





7 



016 



47-8 



44-5 



3-3 



0-4 



0-4 



3 





0-1 



Id. 





8 



021 



45-0 



43-0 



20 



0-4 



0-2 



2 





0-1 



Haze round horizon. 



5 



9 



025 



42-0 



40-8 



1-2 



0-3 



0-2 



3 





0-1 



Id. 



J 



10 



031 



40-7 



39-8 



0-9 



0-2 



01 



3 





0-5 



Cirro-strati and haze. 



} 



11 



035 



39-8 



39-3 



0-5 



0-3 



0-1 



4 5 



: — 



:— 4-5 



Misty scud moving rapidly ; corona ; milky to 1* 



i } 



12 



039 



40-5 



39-9 



0-6 



01 



0-0 



3 





10-0 



Id., or fog at ^ mile. 



1 



The , 



The 



direction of the wind is indicated hy the n 



umber of 1 



he p 



oint of the coi 



npass, reckoning N. = 0, E. = 8, S. = 16, W. = 24. 



motioi 



IS of the three strata of clouds, Sc. (scud), C 



.-s. (cirro-s 



tratu 



s), and Ci. (ci 



prus), are indicated in a similar manner. 





I 



