54 



The results which I have selected are taken from the weekly- 

 records furnished by Captain Wilkinson, E. E., and published by 

 the Registrar-General, and I have also ventured to append a column 

 of mean temperatures calculated by the formula, 



Mean = min + 0.48 (max. - min.).* 



The results in this Table differ very little from the means of maxima 

 and minima, otherwise I should give them with much more diffidence, 

 as I am not yet perfectly satisfied as to the general applicability of the 

 above formula to the determination of mean temperatures. 



TEMPERATURE TABLE AT THE PHQ3NTX PARR. 













Mean of 



Mean 





Date. 



Minimum. 



Maximum. 



Max. and 



by 



Remarks. 













Minimum. 



Formula. 





Dfc 26 



0 



38 





o 



49 



„ 



44 '2 



0 



44 -0 





27 



42 



5 



47 



7 



45 -1 



45 -0 





28 



55 



44 



o 



49 



3 



46 • 6 



46 - 5 





29 



55 " u 1 



32 



o 



49 



9 



41 -2 



39*9 





30 



29 



5 



38 



7 



34-1 



33 "9 

















Heavy fall of snow, which re- 



31 



55 ° +J 



21 



0 



39 



o 



30'2 



29 -9 | 



mained unmelted until the 

 5th and 6th. 



Jan. 1, 



24 



5 



33 



*4 



28 "9 



28-8 





„ % 



12 

 2 



2 

 8 



29 

 20 



•4 



2 



20 -8 

 11 -5 



20-5 j 



ll'l j 



22-4 ( 



Prevailing wind during the 



first period of frost, N. E. 

 Ground ice observed on weir, 



4. 



55 ^1 



9 



5 



36 



•3 



22 '9 



and close to bank of river. 



„ 5, 



32 



5 



45 



•9 



39*2 



38'9 j 



"712 inch of melted snow 

 since January 1. 



» 6, 



43 



8 



50 



•5 



47-1 



47*0 j 



Rain *230 inch, and rapid 

 thaw. 



„ 7, 



43 



8 



51 



•9 



45-9 



45-7 





ii 8, 



36 



•5 



44 



•7 



40-6 



40-4 





„ 9, 



32 



•5 



43 



•3 



37-9 



37-7 





ii 10, 



26 



•5 



37 



'5 



32 -0 



31-8 { 



Prevailing wind during the 

 second period of frost, N.W. 



„ U, 



24 



0 



32 



•o 



28-0 



27-8 



„ 12, 



19 



2 



28 



•5 



23-8 



23-6 





„ 13, 



24 



•2 



31 



2 



27'7 



27-6 





„ 14, 



13 



0 



33 



•2 



23-1 



22-7 





55 15, 



21 



8 



31 



•2 



26-5 



26-3 





if 16, 



12 



•5 



32 



•5 



22-5 



21-1 





„ 17, 



15 



•8 



26 



•5 



21-1 



20-9 





„ 18, 



13 



•2 



33 



■8 



23-5 



23-1 





„ 19, 



30 



•5 



36 



•5 



33 -5 



33-4 





„ 20, 



30 



•o 



37 



•2 



33-6 



33-5 





„ 21, 



29 



*5 



39 



•o 



34-2 



34-1 





„ 22, 



29 



•5 



50 



•o 



39-7 



39-1 





„ 23, 



43 



•4 



53 



•2 



48-3 



48-1 





5, 24, 



37 



•8 



54 



•5 



46-1 



45 -8 





* For a discussion of formulae suitable to the observations in question, see the folio 

 volume of " Ordnance Meteorological Observations :" Dublin, 1856, p. 473. 



