1867.] Insolation to Atmospheric Humidity. 365 



Appendix. 

 No. 1. 



Monthly Mean Maximum Solar Radiation at Greenwich (1860-64). 



Year. 



May. 



June. 



July. 



August. 



September. 



1860. 

 1861. 

 1862. 

 1863. 

 1864. 



103-7 

 96-7 

 99-6 

 95-7 

 93-1 



101-0 

 108-6 



103- 1 



104- 1 

 99-3 



105-6 

 114-5 

 109-4 

 107-2 

 103-7 



103-5 

 116-5 

 110-7 

 106-5 

 100-1 



o 



97 



106-9 

 99-8 

 92-9 

 90-7 



Means * 



97-8 



103-2 



108-2 



107-5 



97-5 







No. 2. 







Monthly Mean Tension of Vapour at Greenwich (1860-64). 



Year. 



May. 



J une. 



July. 



August. 



September. 



1860. 

 1861. 

 1862. 

 1863. 

 1864. 



0-312 

 0-284 

 0-365 

 0-302 



0'306 



0-357 

 0-404 

 0-352 

 0-364 

 0-344 



0-393 

 0-413 

 0-394 

 0-384 

 0-382 



0-396 

 0-436 

 0-410 

 0-412 

 0-333 



0-364 

 0-369 

 0-396 

 0-320 

 0-357 



Means * 



0-314 



0-364 



0-393 



0-397 



0-361 



No. 3. 



Monthly Mean Weight of Cubic Foot of Air at Greenwich (1860-64). 



Year. 



May. 



June. 



July. 



August. 



September. 







grs. 



grs. 



grs. 



grs. 



1860. 



^?5 



4-0 



4-4 



4-4 



4-1 



1861. 



3-2 



4-6 



4-6 



4-9 



4-1 



1862. 



40 



4-0 



4-5 



4-6 



4-4 



1863. 



3-4 



4-1 



4-3 



4-5 



3-6 



1864. 



3-5 



3-9 



4-2 



3-7 



4-0 



Means * 



3-5 



4-1 



4-4 



4-4 



40 



* Extracted from Greenwich Observations. 



