184 



TABLE 2. 



Mean Results of the Four Years. 



MONTH. 



In 



Vacuo. 



January 45 '8 



February ' 55*2 



March | 69-0 



April I 8G-5 



May ! 93-8 



June ! 96-7 



July 1102-6 



August I 97-6 



September 85*2 



October 69-8 



November 51*2 



December 47*2 



Annual Means. 



In 



Carbonic 

 Acid Gas. 



75-0 



45-1 

 53-9 

 67-3 



83-5 

 90-2 

 96-2 

 102-6 

 95-0 

 82-3 

 67-7 

 50-9 

 46-9 



In 



Hydrogen 

 Gas. 



73-4 



45-1 

 53-8 



(jQ-6 

 81-5 

 88-8 

 92-8 

 98-1 

 92-5 

 79-6 

 66-2 

 50-5 

 46-9 



In Con- 

 densed 

 Air. 



45-8 

 55-2 

 66-2 

 82-3 

 89-1 

 93-8 

 98-3 

 93-9 

 82-1 

 68-6 

 61-2 

 47-7 



Bllr. Bulb 



freely 

 Exposed. 



71-9 



72-9 



43-8 

 49-3 

 59-1 

 74-6 

 79-2 

 81-3 

 87-0 

 82-0 

 74-0 

 62-6 

 48-4 

 45-7 



Maximum 



in 



Shade. 



42-1 

 45-1 



48-6 

 59-3 

 64-3 

 66-1 

 71-2 

 68-4 

 62-6 

 57-5 

 47-2 

 46-1 



65-6 56-6 



TABLE 3. 



Differences from the Readings of the Freely Exposed 

 Black Bulb in the Sun. 



month. 



January . , 

 February .. 



March 



April 



May 



June 



July 



August 



September 

 October , , 

 November 

 December. 



Means . 



In 



Vacuo. 



In In 



Carbonic Hydrogen 

 Acid Gas. Gas 



2-0 



5-9 



9-9 



11-9 



14-6 



15-4 



15-6 



15-6 



11-2 



7-2 



2-8 



1-5 



9-47 



1-3 



4-6 



8-2 



8-9 



11-0 



14-9 



15-6 



13-0 



8-3 



5-1 



2-5 



1-2 



In Com- 

 pressed 

 Air. 



1-3 



4-5 



7-5 



6-9 



9-6 



11-5 



11-1 



10-5 



5-6 



3-6 



2-1 



1-2 



7-90 6-28 



2-0 



5-9 



7-1 



7-7 



9-9 



12-5 



11-3 



11-9 



8-1 



6-0 



2-8 



2-0 



7-26 



