TEMPERATURE. 

 In the observations for temperature three thermometers have been made use 

 of; a "standard," a maximum and a minimum, all by Negretti and Zambra 

 and graduated in degrees F. The standard bears the number 16543 and is 

 accompanied by a certificate of examination at the Kew Observatory. The errors 

 of graduation within the range of our work are so small as to make a correction 

 unnecessary. Most of the important results growing out of the temperature 

 observations are exhibited in the following tables and charts. Table C contains 

 all of the readings of the standard thermometer made during the year. This 

 table is represented graphically in the six pages of Chart number 3, from an 

 examination of which a good idea of the fluctuations in temperature throughout 

 the year, will be obtained. Table D exhibits for every day of the year the 

 maximum, minimum, and two mean temperatures, the first being the mean 

 obtained from the observations made with the standard thermometer, and the 

 second the mean from the observations of maxima and minima. It will be 

 observed that these two means agree very closely with each other in many cases 

 and do not differ wddely in any. 



A minimum temperature of 32" or under was observed as follows ; 



In January on 27 days 



,, February „ 13 „ 



„ November „ 1 „ 



„ December „ 5 „ 



Total for the year 46 „ 



A maximum temperature of 90° or over was observed as follows ; 



In July on 7 days 



„ August „ 5 „ 



Total for the year 12 ,, 



Table E exhibits the range of temperature for ever}' day of the year. Table 

 F contains in a condensed form many of the most important facts found in the 

 previous tables. It will be seen that the mean temperature for the whole year 

 was 5S°.5 ; that the lowest monthly mean was 37 c .7 for January and the highest 

 80°.2 for August. - The lowest maximum temperature in any month was 60°. 5 

 in February and the highest, being the maximum temperature for the whole 

 year, was 93° which was reached on August 15. The highest minimum tempera- 

 ture in any month was 69°. 4 in August and the lowest, being the minimum 

 temperature for the whole year, was 24°. 1, which was reached on January 2 and 

 also on January 7. Thus the entire range of temperature for the year was 68°.9, 

 the maximum daily range being 29°. 8 on March 23 and the minimum daily 

 range 3 D on March 6. This table is represented graphically in Chart number 4. 

 The curve in the first diagram shows the fluctuations in the monthly means of 

 temperature. The second diagram shows the maximum and minimum tempera- 

 tures and range for each month and the third exhibits the maximum and 

 minimum daily range for each month. 



