11 



TEMPERATÜRE. 



Tahle C contains all the regular readin'j^s of the stamlanl tliermoineter 

 during the year, and from this table Chart No 3 is cunstructed, showing tlie 

 fluctuations in temperature throughout the year. In table D will be found the 

 maximum and minimum temperatures for every day in the year, the mean of the 

 readings of the standard thermometer and also the mean of the maximum and 

 minimum temperatures for each day. 



Tlie following is a comparison of extreme temperatures in the year 18S0 

 with those of the previous year. 



A minimum of 32° or under was observed as follows ; 



In J 



anuary on. 



1880 1879 

 ...29 days 27 days 



.13 

 ,. 4 

 . 1 



. 5 

 .50 



„ February 12 ,, .... 



„ March 8 ,, .... 



„ November 1 ,, .... 



,, December 22 „ .... 



Total for the year 72 ,, .... 



A maximum temperattire of 90° or over was obsen'cd as follows ; 



1880 1879 



In July da3-s 7 days 



„ August 2 „ 5 „ 



Total for the year 2 „ 12 „ 



It will thus be seen that the temperature during the j-ear has been, on the 

 whole, lower than during the year previous. In the general means the difference 

 amounts to 1°.2, that for tliis year being 57°.3 and that for 1879 58°.5. 



Table F contiiins monthly means, maxima, minima etc., collected from the 

 previous tables. If it be compared with the con-espcnding table for the jirevious 

 year it will be seen that for several months the means for the two yeai-s agree 

 very closely, the principal difference occurring during the last four months. 

 During the months of September, October and November the temperature wiis 

 higher than during the same time in the previous year but in December a sudden 

 fall occurs. In 1879 the difference between the November and December means 

 was 2°.8, in 1880 it was 11°. 3. The minimum temperature for 1879 occurred in 

 January; that for 1880 occurred in December. A low temperature continued to 

 prevail in January 1881 and the winter of 1880-81 must be regarded as one of 

 unusual severity. It must also Ikj noticed that lower temperatures jirevailed 

 during Julyand August of this year than during the same months of the year 1879. 



The highest temjwrature reached during I8S0 was 90°.5 on August 21st 

 nnil only on one otlier day was as high a temperature as 90° recorded, whereas 

 in 1879 the highest point reached was 93° and a record of 90° or higher was 

 made on 12 days of that year. 



