Monthly Bloteorologlcal Register, at the Provincial Ma<?;netical Observatory, Toronto, Canada West.— March, 1855a 



Latitude, 43 deg. 39.4 min. North. Longitude, 79 deg 21. min. West. Elevation above Lake Ontario, 108 /erf. 





Barom. at temp, of 



32 deg. 



Temp, of the Air. 



Mean 



Tension of Vapour. 



Humid'y of Air. 



Wind. 





















Temp. 

 + or — 











Rain 



















































10 





6 



2 



10 





of the 



6 



o 



10 





6 



2 



10 











Mean 



in 





a.m. 



2 P.M. 



P.M. 



Mean. 



A.M. 

 o 



—2-9 



P.M. 



P.M. 



bi'n. 



Average 



A.M. 



0-039 



P.M. 



P.M. 



m'n 



A.M 



P.M 



•68 



P.M 



•86 



m'k 



6 a.m. 



2 P.M. 



10 P.M. 



Vel'j 

 7-74 



Inch. 



1 



30-060 



29-966 



29-952 



30-001 



31°5 



24-1 



o 



19-2 



-°6-0 



0^120 



0^115 



0^097 



■93 



•82 



NWbW 



S W 



WSW 



9 



29.900 



•788 



•733 



29^798 



23-7 



35-2 



30^2 



29-6 



+ 4-2 



-119 



■184 





150 



■151 



92 



90 



89 



90 



SWbW 



SWbS 



Calm 



5-46 



... 



3 



■6.53 



•564 



■659 



•625 



29^4 



34-7 



34-8 



33^3 



+ 7-6 



•148 



•165 





183 



■170 



91 



86 



92 



90 



SWbW 



SWbW 



WbS 



4^98 



... 



4 



•740 



•706 







26-fi 



39-5 













•127 



■176 





— 



— 



87 



73 



— 



— 



NWbW 



S 



S W 



7^00 



0-170 



fi 



•385 



•187 



•031 



•182 



36-5 



39-7 



39-5 



37^7 



+11-4 



-205 



■214 





184 



•192 



95 



88 



76 



85 



SWbW 



SWbS 



WbS 



15^41 



0-005 



fi 



•391 



•464 



•564 



•482 



26-fi 



33-9 



20-6 



26^5 



0-0 



•126 



•160 





102 



■126 



86 



81 



90 



85 



WN W 



WNW 



N 



8-97 





7 



■524 



•484 



•717 



•584 



17-fi 



27-3 



23-7 



23-3 



— 3-5 



•076 



•128 





119 



■111 



75 



85 



92 



85 



N 



EbN 



NNE 



2^10 



• •* 



8 



•790 



•720 



•309 



•591 



9-0 



31-9 



29-1 



24-4 



— 2-8 



•058 



•133 





148 



■117 



83 



74 



92 



86 



N 



Sb E 



ESE 



2-42 





9 



•238 



•438 



•771 



•501 



2fi-fi 



29^0 



17-2 



24^4 



— 3^1 



•136 



•111 





085 



•116 



92 



68 



85 



84 



WbS 



NWbW 



NNAV 



20-72 





in 



•994 



•903 



•776 



■880 



7-9 



25-5 



24-8 



19-4 



— 8^4 



•054 



■102 





119 



■092 



81 



73 



87 



80 



NN W 



SWbS 



SSE 



3-75 





11 



•586 



•490 









28-4 



29-8 







— 







-146 



•134 





— 



— . 



94 



81 



— 



— 



E 



ENE 



NEbN 



7-27 





T'^ 



•658 



•712 



•766 



•726 



24-8 



35-1 



25-5 



27^9 



— 0-6 



•119 



•128 





126 



■120 



87 



63 



89 



79 



N 



EbS 



ENE 



7^58 





13 



•602 



■304 



•174 



■352 



25-1 



27-8 



30-2 



28-2 



— 0-8 



•100 



■141 





163 



■139 



72 



91 



97 



88 



ENE 



E 



EbS 



20-74 





14 



•260 



•369 



■395 



■344 



33-0 



38-8 



36-3 



36-6 



+ 7-3 



•169 



162 





183 



•179 



90 



69 



80 



83 



Calm 



SSE 



Calm 



3-47 



0-680 



15 



•137 



•153 



■578 



■310 



36-3 



41-4 



32-4 



36-1 



+ 6-4 



•213 



•179 





167 



•181 



100 



69 



92 



86 



E 



WbN 



W 



10-92 



0-415 



Ifi 



•716 



•744 



•736 



■730 



22-7 



37-8 



30-5 



31-1 



+ 1-1 



•106 



■142 





148 



•135 



84 



63 



88 



78 



Calm 



Sb W 



Calm 



2-18 



>•* 



17 



•473 



•126 



■403 



■323 



32-7 



38-4 



34-8 



35-4 



+ 4-9 



■139 



•167 





151 



•159 



86 



72 



74 



79 



E 



Sb W 



SWbW 



17-70 



0^215 



IS 



•625 



•644 







31-7 



39-9 











. , 



•149 



•160 





— 



— 



83 



66 



— 



— 



WbS 



WbS 



Calm 



6-83 





19 



•653 



•507 



■408 



■506 



21 •O 



40-2 



24-9 



28-8 



— 2^5 



■102 



•159 





113 



•129 



84 



64 



82 



77 



Calm 



SEbS 



WSW 



9-72 



• •• 



''n 



•453 



■553 



■788 



•613 



21^0 



28-0 



21-9 



23-7 



— 7-9 



■101 



•095 





097 



■098 



89 



62 



80 



76 



WS W 



WbS 



W 



18-35 



... 



"1 



■933 



■940 



•916 



•934 



21^2 



28-2 



26-9 



24-0 



— 8^0 



■100 



•131 





131 



■114 



85 



84 



88 



80 



N W 



W 



WNW 



5-25 





09 



■846 



■679 



•508 



•652 



17-4 



32-7 



23-7 



25-4 



— 7-1 



■079 



•094 





099 



•097 



79 



51 



75 



69 



WN W 



WS w 



SWbW 



10-99 





^8 



•143 



28-8-58 



28^960 



28^981 



26-9 



34-0 



29-8 



29-6 



— 3-2 



■131 



■161 





102 



•133 



88 



81 



61 



79 



SWbW 



s w 



WNW 



16-31 





94 



•138 



29-248 



29 ■351 



29^266 



7-9 



23-8 



21-5 



17-1 



—16-0 



•051 



■078 





101 



•076 



76 



61 



84 



74 



NN W 



NWbW 



W 



18-46 



• •• 



9.5 



•367 



■313 







, , 



23-3 



33-2 



. . 











■111 



•165 





— 



— . 



86 



87 



— 



' — 



WbS 



WbS 



W 



12-72 



*.. 



■'fi 



•262 



■044 



•082 



■113 



27-3 



,30-0 



26-2 



27-8 



— 6-2 



■133 



•140 





131 



■134 



88 



83 



91 



87 



Calm 



EbS 



WbS 



10-88 





'7 



•260 



■426 



•554 



-429 



22-6 



28-2 



20-2 



23-1 



—11-3 



■114 



•124 





096 



•109 



91 



79 



86 



85 



Nb W 



NWbN 



NWbW 



12-52 



• •• 



''8 



•575 



■545 



•546 



-559 



20-0 



29-5 



23-3 



24-8 



— 9-9 



•092 



•106 





112 



•102 



82 



64 



86 



75 



NWbW 



WbN 



WbS 



14-82 





"^9 



•519 



■492 



•537 



-521 



22-3 



43-2 



33-0 



33-5 



— 1-6 



•100 



•130 





148 



•131 



80 



47 



78 



69 



WbS 



WSW 



S W 



10-55 



... 



39 



•560 



■546 



•521 



-540 



29-8 



46-5 



34-8 



37-6 



+ 2-1 



■136 



•168 





153 



•100 



82 



54 



74 



72 



WS W 



SWbS 



Calm 



5-90 





31 



•511 



■345 



•118 



-308 



35-0 



48-6 



36-6 



39-8 



+ 3-9 



■188 



•229 





184 



•194 



93 

 •86 



68 



"•72 



85 

 •85 



81 

 •81 



Calm 



SbW 



Calm 



6-74 

 9-95 



1^485 



M 



29-540 



29-485 



29-513 



29-513 



23-1 



34-1 



28-0 



28-5 



— 1-9 



O^llO 



>143 



0^134 



0^132 



8-71 



11-25 



9-49 



Inch. 



\-Q 



2^0 

 1^2 

 0^1 



6-0 



0-1 



0-5 

 Inap. 



o'-'i 



0^3 



o"3 

 6^5 



Highest Barometer 30-079, at 11 a.m. on 21st "l Monthly range : 



Lowest Barometer 28-792, at 8 p.m. on 23rd j 1-287 inches. 



Highest registered temperature +49°-4, at p.m., 31st \ Monthly range: 

 Lowest i-egistered temperature — 2°-9, at a.m. on 1st J 52°-3. 



Jlean Maximum Thermometer 30°-52 \Mean daily range: 



Mean Minimum Thermometer ]9°-63J 16°-89. 



Greatest daily range 37°-3, from a.m. to p.m. of 1st. 



Least daily range 7°-8, from p.m. of 14tb, to a.m. of 15th. 



Warmest day 31st. Mean temperatm-e 39°-82 \ Difference, 



Coldest day 24th. Mean temperature 17°-15 j 22°-67. 



Greatest intensity of Solar Radiation, 58°-2 on p.m. of 30th ■) Range, 

 Lowest pointof Terrestrial Radiation, 2° -8 on a.m. of 10th j 5-5°-4. 

 Aurora obserTCd on 5 nights: viz. 6th, 9th, 12th, 15th and 18th. 

 Possible to see Aurora on 16 nights. Impossible on 15 nights. 

 Raining on 5 days. Raining 20-0 hours : depth, 1-485 inches. 

 Snowin'g on 11 days. Snowing 44-2 hours ; depth 18-1 inches. 

 Mean of Cloudiness, 0-67. No thunder or lightning observed during 



the month. 

 Halos were observed on the 1st, 2nd, 10th, 16tb, 22nd, 26th, 28th and 



30th. 

 Parhelia were noted on the 16th at 7 a.m., and on the 30th at 6 p.m. 



Sum of the Atmosjjheric Current, in miles, resolved into the four Cardinal 



directions. 

 North— 1644-90 West— 4790-04 South.— 509-00 East— 1255-00. 

 Mean direction of the Wind, W 16° N. 

 Mean velocity of the Wind, 9-95 miles per hour. 

 M,asimum velocity, 36-0 miles perhour, from 10 to II a.m. on 20th. 

 Most windy day,' the 13th; mean velocity, 20-74 miles per hour. 

 Least windy day, the 7th ; mean velocity, 2-10 " " 



Most windy hour, 5 p.m. ; Mean velocity, 12-48 miles per hour. 

 Least windy hour, 2 a.m. ; Mean velocity, 8-08 miles per hour. 

 Mean diurnal variation, 4-40 miles. 



March, 1855, was remarkable as the most windy month recorded 

 during the last eight years, the mean hourly velocity exceeding the 



average by 2-94 miles, and surpassing the nest most windy month, 

 (Dec, 1854), by 1-31 miles per hour. 



The cjuantity of snow which fell was considerable, exceeding the 

 average of the last thirteen years by 8-2 inches, being only surpassed 

 on two occasions — in March 1843 and 1852. 



It was also a cold month, the mean temperature falling 1°9. below 

 the average of the last sixteen years. 



The Barometric pressure (29^5129) is the lowest monthly mean for 

 any March during the whole series. 









Comparative Tahle for Marcll* 









Temper.'iture. 





Kain. 



Snow. 



Wind 





pi 























Mean. 



from 

 Av-ge 



M.1X. 

 obs'vd 



Min. 

 obs'vd 



Rtjnge 



D's. 



Inch. 



D's. 



Inch. 



Mean 

 Velocity. 





1840 



33-1 



+2-9 



50-9 



8-7 



48^2 



8 



1^640 



8 









1841 



27-7 



—2-7 



53-5 



—6-9 



60 ^4 



5 



M70 



7 





0-51 



lb. 



1842 



35-8 



+5-4 



68-7 



14-9 



53^8 



4 



3^150 



8 



... 



0-70 



lb. 



1843 



21-3 



—9-1 



38-6 



—2-8 



41-4 



2 



0^625 



18 



25^7 



1-18 



lb. 



1844 



31 •S 



+0-9 



50-3 



9-6 



40^7 



8 



2^470 



8 



14-0 



0-57 



lb. 



1845 



35-4 



+5-0 



61-7 



9-9 



51-8 



5 



Impf 



8 



2-8 



0-66 



lb. 



1846 



33^1 



+2-7 



49-3 



7-6 



41^7 



9 



1^965 



5 



2-3 



0-30 



lb. 



1847 



26-2 



4-2 



44-3 



4-8 



39^5 



5 



0^850 



6 



4-2 



0-71 



lb. 



1848 



28-6 



—1-8 



58-9 



0-9 



58^0 



5 



1-220 



6 



9-7 



5-80 



Miles. 



1849 



33-5 



+3-1 



53-4 



15-4 



38^0 



7 



1-525 



2 



2-3 



5-37 



Miles. 



18.50 



29-8 



—0-0 



46-0 



6-0 



40-0 



2 



0-745 



7 



11-2 



7-62 



Miles. 



1851 



32-4 



+2-0 



58-7 



13^1 



45-6 



3 



0-770 



9 



8-8 



7-65 



Miles. 



1852 



27-7 



—2-7 



44-8 



-3^2 



48^0 



8 



3-080 



12 



19-5 



5-81 



Miles. 



1853 



30-0 



+0-2 



56-3 



—0^1 



56^4 



6 



1-080 



8 



7-1 



5-87 



Miles. 



1 854 



30-7 



+0-3 



52-8 



10^4 



42^4 



9 



2-425 



3 



2-8 



8-02 



Miles. 



1855 



28-5 



—1-9 



48-6 



—2-9 



51^5 



5 



1-485 



11 



18-1 



9-95 



Miles. 





0-66 

 7-01 



lbs. 



M'n. 



30.37 





.52-67 



5-34 



47-34 



5^7 



1-613 



7-9 



9-9 



Miles. 



