109 



are certainly greatly below the truth. Upon the present 

 occasion, therefore, I can direct attention only to the obser- 

 vations made in July and August last. These are contained 

 in the following table, and, as has been already stated, they 

 amount to twenty in number, the highest temperature 

 having been 65°, and the lowest 49°"6. The numbers in the 

 last column represent the bulks which the 911*64 volumes 

 of dry air would have, if reduced to the temperature t, and 

 the corrected pressure p. 







Table I. 













Tempera- 





911-64 reduced 



v 



t 



p observed 



ture of 

 Barometer. 



/) corrected. 



to t andp 

 corrected. 



1001 



60-4 



29-450 



59-9 



29-430 



982-82 



1001-5 



59-8 



29-364 



601 



29-338 



984-77 



997 



60 



29-548 



60 



29-524 



978-94 



984 



59-1 



29-822 



59-5 



29-807 



967-97 



977 



58-4 



29-980 



58-6 



29-971 



961-38 



984 



58-4 



29-780 



58-9 



29-767 



967-97 



991 



59 



29-624 



59-4 



29-607 



974-33 



983-5 



59-4 



29-862 



59-8 



29-847 



967-23 



979-5 



60-2 



30-100 



60-6 



30-086 



962-69 



977-5 



61-2 



30-132 



61-3 



30-165 



960-35 



983 



61-6 



30-05 



62-2 



30 037 



965-18 



9733 



62-2 



30-230 



62-4 



30-212 



960-69 



978-4 



61-6 



30-214 



62-2 



30-197 



960-06 



983-5 



987-5 



63-1 

 64-3 



30-156 

 30-130 



63-6 

 64-7 



30-131 



964-93 



30-104 



968-01 



991 



64-1 



30032 



64-6 



30-005 



970-83 



994-5 



64-8 



29-989 



65 



29-961 



973-55 



994-5 



65 



29-972 



66 



29-940 



974-61 



989 



65-2 



30-152 



66-5 



30-120 



969-12 



1000 



64-8 



29-834 



65 



29-306 



978-62 



From the first, last, and second last columns of the pre- 

 ceding table, the force of aqueous vapour has been calcu- 

 lated in the manner already explained. The values thus 

 obtained are exhibited in the second column of Table II. 



