niontUly MctooroIoglcBl Register, at tlie Piovliiclal Alaguettcal Observatory^ Toronto, Canada West.— December} 1854. 



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





Barom. at temp, of 32 deg. 



Temp, of the Air. 



Mean 



Tension of Vapour. 



Humid'yofAir. 



■Wind. 





■ 

















Temp. 



+ or — 











Rain 















































Snow 









10 





6 



2 



10 





of the 



6 



2 



10 





6 



2 



10 











Mean 



I^h. 



m 



p 



6 a.m. 



2 P.M. 



P.M. 



29-458 



Moan. 



A.M. 



o 

 24-1 



P.M. 



P.M. 



m'n. 



Average 



A.M. 

 0-115 



P.M. 



P.M. 



m'n 



A.M 



-86 



P.M 



•78 



P.M 



-84 



m'k 

 •79 



6 a.m. 



2 p.m. 



10 P.M. 



Vel'y 

 U^SI 



Inch. 



1 



29-611 



29-393 



29-498 



34°-0 



28-6 



o 



28-7 







— 2^1 



0-155 



0-146 



0^129 



WS W 



wsw 



WNW 



0-2 



2 



•680 



•710 



-578 



-656 



11-2 



26-2 



23-3 



20-9 



— 9-6 



-052 





083 



-094 



■079 



67 



56 



74 



66 



NbW 



NbE 



NE 



6^84 





3-0 



3 



•195 



•148 











25-2 



24-9 













-123 





123 









88 



89 











EbS 



NE 



— 



1 7 --58 



■ •• 



3^0 



4 



•274 



•202 



-230 



-241 



15-4 



19-1 



13-4 



15-3 



— 14-5 



-069 





066 



-063 



■064 



75 



62 



75 



70 



NNW 



NWb N 



NNW 



23-21 





3-5 



5 



•209 



•250 



-218 



-226 



12-0 



19-0 



22-3 



17-9 



— 11-5 



-065 





079 



-092 



•080 



80 



74 



75 



77 



WbN 



WNW 



\V S W 



16-09 



... 





6 



•016 



28.918 



28-934 



28-954 



20-5 



26-2 



26-9 



24-8 



— 4-3 



•098 





128 



•131 



•120 



86 



87 



88 



87 



SWbW 



WSW 



WSW 



13-33 





2-6 



7 



•153 



29^312 



29-572 



-29-377 



15-8 



14-3 



5-4 



11-2 



— 17-4 



•064 





060 



•042 



•052 



68 



68 



69 



66 



NNW 



NNW 



NNW 



15-41 



«.• 



0-2 



8 



•780 



•899 



30-014 



•918 



- 1^1 



17-9 



6-1 



86 



— 19-8 



•036 





073 



•053 



•059 



77 



71 



85 



81 



N 



NWbW 



Calm 



4-43 







9 



30-021 



•912 



29-787 



•887 



17-2 



31-5 



29-1 



26-6 



— 1-6 



•086 





055 



•143 



•133 



85 



88 



89 



89 



Calm 



S 



Calm 



4-17 



Inap. 



... 



10 



29-650 



•721 



— 







33-0 



37-7 















•142 





143 











75 



64 



— 



— 



Calm 



w 



— 



7-16 



... 



... 



11 



•720 



•751 



■805 



•760 



29-1 



28-4 



20-8 



24-7 



— 2-9 



•143 





121 



•089 



•111 



89 



76 



77 



79 



WNW 



NWbN 



NWbW 



9-92 





0^1 



12 



•690 



•773 



•654 



•708 



17-6 



27-1 



24-8 



23-2 



— 4-1 



•080 





111 



•102 



•098 



79 



74 



75 



76 



WNW 



NNW 



S W 



10-33 



... 



0-1 



13 



•369 



•328 



•487 



•402 



34-5 



40-6 



37-3 



37-5 



+ 10-4 



•165 





193 



•193 



•181 



82 



77 



87 



81 



SWbW 



w s w 



WbS 



7-78 



•>> 



>.■ 



14 



■ ^551 



•499 



•420 



•484 



30-6 



40-9 



36-3 



35-3 



+ 8-4 



•147 





136 



-183 



-163 



86 



54 



86 



80 



Calm 



w s w 



SSW 



4-68 





, . 



15 



•352 



•302 



•315 



•323 



37-3 



41-8 



37-0 



38-3 



+ 11-5 



•204 





234 



-198 



■208 



92 



89 



91 



91 



SWbS 



Calm 



Calm 



5-40 



•030 





16 



■391 



•532 



•611 



■529 



28-7 



27-6 



18 7 



24-9 



— 1-7 



•120 





089 



-084 



-101 



75 



58 



80 



74 



NNW 



NbW 



NbE 



10-82 





0^4 



17 



•655 



•590 







— 



11-1 



12-6 



— 











•070 





061 







, 



91 



75 



— 







NEbN 



N E 



— 



8-02 





2^5 



18 



•633 



•670 



•770 



■694 



6-5 



13-8 



0-0 



6-5 



— 19-7 



•051 





058 



-038 



-050 



79 



67 



81 



79 



Calm 



NWbW 



Calm 



3-52 





... 



19 



•812 



•770 



•740 



•779 



- 2-7 



10-1 



- 5-9 



2-0 



— 24-1 



•043 





057 



-033 



•046 



98 



77 



92 



88 



NNW 



Calm 



NWbN 



4-06 



... 





20 



•615 



-489 



•372 



■48V 



14-2 



24-9 



23-3 



20-8 



— 5-1 



•076 





092 



•106 



■092 



86 



67 



81 



79 



Calm 



SWbW 



SWbW 



8-57 





0-6 



21 



•364 



•559 



•788 



•591 



17-6 



22-4 



4-9 



14-6— 11-2 



•087 





092 



•048 



■073 



85 



74 



81 



79 



WbN 



NbW 



N 



11-94 







22 



•964 



30-070 



30-179 



30-084 



- 2-1 



4-5 



6-7 



3-3— 22-4 



•036 





043 



•057 



■046 



84 



75 



89 



81 



NbE 



NNE 



NNE 



6-46 





[nap. 



23 



30-191 



30-109 



29-923 



30-054 



18-3 



17-0 



28-0 



21-8— 3-7 



•091 





065 



•140 



■102 



88 



65 



90 



81 



ESE 



NE 



Calm 



7-06| 



•03t 



1-6 



24 



29-732 



29-681 



— 



_. 



34-5 



37-7 















•186 





189 











94 



84 



— 







SWbS 



SWbW 



— 



5-93 



... 





25 



-717 



•630 











36-3 



38-8 















•197 





191 











93 



81 



— 







SWbW 



SWbS 



— 



3-36 



... 



[nap. 



26 



•700 



•628 



-468 



29-594 



38-8 



36-3 



36-6 



37-2 



+ 11-9 



•218 





190 



•202 



■204 



93 



89 



94 



92 



Calm 



ENE 



E 



5^78 



•135 





27 



•469 



-606 



-675 



•588 



35-5 



39-6 



37-0 



36-8 



+ 11-5 



•198 





191 



■198 



•190 



95 



79 



91 



88 



Calm 



NbE 



Calm 



2-67 



•065 





28 



-448 



-187 



•334 



•323 



36-3 



39-1 



30^0 



34-5 



+ 9-3 



•197 





221 



•136 



•179 



93 



93 



81 



87 



ESE 



E 



NWbW 



13-96 



-330 



[nap. 



29 



■630 



-751 



-918 



•780 



17-0 



16-5 



7^2 



12^5 



— 12-7 



•082 





057 



•047 



-061 



83 



59 



72 



74 



NWbW 



NNW 



NbW 



13-13 



... 



[npa. 



30 



-870 



-676 



-740 



•752 



3-6 



25-6 



26-9 



1 9^2 



— 6-0 



•043 





119 



•133 



-098 



76 



85 



89 



82 



NNW 



ssw 



Calm 



0^92 



... 



... 



31 



•844 



-849 



— 



— 



27-7 



31-6 



— 



2r^9 



— 



•123 

 0-101 



0" 



117 

 115 



0^110 



0-1091 



80 

 ^3 



66 

 "7l 



"83 



"80 



Calm 



ENE 



— 



4^10 

 8-66 



0^9"C 





M 



29-581 



29-.572 



29-599 



29.587 



19-0 



25-8 



21-0 



— 5-2 



9-39 



10-78 



7-07 



17-2 



Highest Barometer 30-24-5, at 10 a. m. on 23rd 1 Monthly range : 



Lowest Barometer 28-917, at 4 p.m. on 0th / 1-328 inches. 



Highest registered temp' ture +44°-8, at p.m. on 15th "I Monthly range: 



Lowestregistered temperature — 7°-0, atp.m.onl9th / 51°-8. 



Mean Maximum Thermometer 29°-46"| Mean daily range: 



Mean Minimum Thermometer 14°-38/ 15°-08. 



Greatest daily range 31°-2, from p.m. of 21st to a.m. of 22nd. 



Warmest day 15th. Mean temperature 38° -28 "1 Difference, 



Coldest d,iy 19th. Mean temperature 2°-02 / 36°-26. 



Greatest intensity of Solar Radiation, -|-52°-0 on p.m. of 14th 1 Range, 



Lowest point of Terrestrial Radiation, — ll°-8 on a. m. of 19th / 63°-8. 



Aurora observed on 1 night: Tiz. 29th. 



Possible to see Aurora on 7 nights. 



Impossible to see Aurora on 24 nights. 



Raining on 5 days. Raining 19-0 hours: depth, 0-590 inches. 



Snowing on 12 days. Snowing 63-0 hours ; depth 17-2 inches. 



Toronto Bay was frozen over on the 2nd December, and it continued 

 permanently frozen during the month. Skaters and Pedestrians 

 crossed on the ice from the St. Lawrence Market to the Peninsula 

 Hotel on the 8th. 



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

 directions. 

 North. West. South. East. 



3101-02 3156-48 995-16 873-50 



Mean direction of the AVind, W 43" N. 

 Mean velocity of the Wind, 8-66 miles per hour. 

 Maximum velocity, 38-2 miles per hour, from 10 to 11 a. m. on 4th. 

 Most windy day, the 4th; mean velocity, 23-21 miles per hour. 

 Least windy day, the 30th ; mean velocity, 0-92 " " 



This month has been marked by an unusually early setting in of 

 winter, the thermometer having fallen below zero on the 7th, and the 

 Bay frozen over on the morning of the 2nd. The mean temperature 

 of the month has been 4'?-3 below the mean of the last fifteen Decem- 

 bers, and is the lowest of all but those of 1845,1850 and 1851. The 19th 

 was the coldest day of the year bnt one.— -January 28th the mean of 

 which was l°-58. 



The depth of rain fallen is nearly an inch below the average, and 

 that of snow 4-2 inches above. The month is also remarkable as hav- 

 ing been the most windy month of the whole series of 8 years — the 

 mean velocity being 2-26 miles per hour above the average December 

 velocity ; on the 4th the mean of the whole day was 23-21 miles per 

 hour, which much exceeds anything previously recorded. 



The change of mean temperature from d,ay to day has been exces- 

 sive in several instances — thus from the 8th to 9th it rose 18°-, from 

 19th to 20th it rose 18°-8, and from 22nd to 23rd it rose 18°-5, and 

 from the 28th to 29th it fell 22°.0. Between 10 p.m. on the 19th and 

 2 p.m. on the 20th there was a rise of temperature of 30°-8. 







Comparative 



Table for December. 









Temperature. 



liMin. ] Snow. 



TVind. 





















^ iMean. 



Dif. 

 from 



Av'ge. 



Max. 

 obs'vd 



Min. 

 obs'vd 



Range 



D's. 



Inch. 



Ds. 



Inch. 



Mean 

 Velocity. 





1 ° 

 1840124-3 



o 



—1-9 



4f-0 





 — 4.4 





 45-4 



3 



Inap. 



18 









1841 



28-7 



-f2-5 



45-5 



+ 2-4 



43-1 



t 



6-600 



5 





1-33 



lb. 



1842 



24-7 



—1-5 



40-3 



-1- 3-8 



36-0 



3 



0-880 



17 





0-61 



ft). 



1843 



30-0 



-1-3-8 



4M 



-f- 2-7 



38-4 



6 



1-040 



8 



8-1 



0-53 



ft). 



1844 



28-2 



-1-2-0 



48^9 



— 0-8 



49-7 



6 



Impf 



6 



4-2 



0-40 



lb. 



1845 



21-1 



—5-1 



37-6 



— 2-7 



40-3 



2 



Inap. 



12 



4-7 



0-70 



lb. 



1846 



27-5 



-fl-3 



49^2 



+ 3-7 



45-5 



5 



1-215 



9 



6-0 



0-57 



lb. 



1847 



30-1 



-1-3-9 



50^0 



-1- 6^6 



43-4 



7 



1-185 



8 



6-8 



4-55 



Miles. 



1848 



29-1 



-1-2-9 



49^1 



+ 0-6 



48-5 



/ 



2-750 



7 



16-5 



5-44 



Miles. 



1849 



26-5 



-1-0-3 



41 ^3 



— 52 



46-5 



5 



0-840 



12 



9-6 



6-23 



Miles. 



18.50 



21-7 



—4-5 



48^3 



— 9-7 



58-0 







0-190 



18 



29-5 



7-4o 



Miles. 



1851 



21 -5 



-4-7 



43^8 



—10^5 



54-3 



6 



1-075 



15 



10-7 



7-37 



Miles. 



1852 



31-9 



-f5-7 



51^0 



-1-13-9 



37^1 



7 



3-995 



10 



20-1 



6-54 



Miles. 



18.53 



25-3 



—0-9 



42^2 



— 5-2 



47-4 



4 



0-625 



13 



22-3 



4-98 



Miles. 



1854 



21-9 



—4-3 



41-8 



— 5-9 



47-7 



5 



0-59012 



17-2 



8-66 



Miles. 





0-69 

 6-40 



lbs. 



.M'n. 



20-17 





44.74'— 0-71 '45-45 



5-0 



l-499'l]-3 



13-0 



Miles. 



