196 



Meteorological Observations, 8fc. 



[No. S4, 



CO 



oo 



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Mean monthly 

 tension of va- 

 pour calculated 

 l)y the monthly 

 means of dry 

 and wet ther- 

 mometer, at Zii 

 inches barome- 

 ter standard. 



7 • 



Inches. 

 



Inches. 

 0-800 

 •811 

 •854 

 •850 

 •808 

 •712 



Mean per 

 centage of 

 clouds co- 

 vering the 

 face of thel 

 sky during! 

 the day and] 

 night in 

 eachnionth 



Night 



Cents 

 •60 

 •75 

 •57 

 •55 

 •65 

 •35 



c? 



O 



Cents 

 •70 

 •70 

 •62 

 •60 

 •72 

 •42 



Mean and ex- 

 treme jires- 

 sure of the 

 wind, as 

 shown on a 

 square foot 

 of surface. 



Ex. 

 treme 



lbs. 



3-25 



1- 57 

 2^05 



2- 85 

 6-70 

 205 



Mean. 



lbs. 



0-35 

 •30 

 •18 

 •18 

 •37 

 •16 



Direction of the| 

 wind in each 

 month, asexhibit- 

 cd by tlie num- 

 lier of hours char- 

 ing which it lias 

 blown from tlie 

 N.W. S.W. S.E. 

 or N.E. 



N.E. 



• <:0 C5 (M CO 00 O 

 ^ r-t »0 Ci .-H 

 •jZ r-l CO kO 





• r-- 1^ lO CO 



^ (M CM CO Oi CO CO 



I 



m 



oo o CO CO CO CO 



° O O r-H CO rH 



^ CO CO c<j 



N.W. 



• CO 00 O 'i" C<1 CO 

 ^2 O CO CO C<l 

 iZ; CI (M CM C<J r-t 



Depth to which rain 

 has fallen. Sc. amount 

 of water evaporated 

 from a shallow cis- 

 tern of water, toge- 

 ther with the rela- 

 tive humidity of the 

 air. 



3 



Quan- 

 tity of 

 moisr 

 ture or 

 humi- 

 dity. 



.2 CO 00 T*< 



;3 CO CO t>. t- 00 



o •-•'•• ' 



o 



Evapo- 

 ration. 



>0 CO 'tH CO oo 

 • CO ^ »0 'O CO "-^^ 

 g C^l CO CO 05 CO CO 



»-< o o 'o «b 







Rain. 



Ins. 

 .^•S6Q 



3-092 

 13-933 

 17 285 



3112 



Mean monthly tem- 

 perature, as deduced 

 from the hourly ob- 

 servations, together 

 with the mean 

 monthly maximum, 

 and minimum tcni- 

 povature. 



0 i 

 * 



3 



p 



78-8 

 78-7 

 78-8 



73- 6 



74- 7 

 72-0 



Max- 



Q7-7 



96-2 

 93-5 

 905 

 84-2 

 83-2 



Mean. 



07.0 

 0(0 



86-3 

 850 

 82-8 

 78-8 

 77-3 



Mean monthly indica- 

 tions of the barome-i 

 ter, at the times of 

 superior maxiinunv 

 and minimum ]u\'s | 

 sure, corrected to 

 32« 0. 



1 



Differ- 

 ence 



1 0 CO CO — 1 C<I t-i 



,_(,_( (M C^l 0 r-l 



^ 2 - r - - 





% 0 >0 0 CO CO 

 CO •— 1 'O >— ' 



w CO CO t-- 00 0 





Ins. 

 29-770 

 . -793 

 . -833 

 . -875 

 . -978 

 . 30^024 



4 1 



rS <U 



^ I 



?5 3 a. 



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