12 



Mr, R. H. Scott on the Connexion [June 17, 



KEW. — Humidity of the Air. | NERTCHINSK.— 



Hours of 

 mean time. 



January. 



Feb. 



March. 



April. 



May. 



June. 



July. 



August. 



ft 

 m 



October. 



Nov. 



Dec. 



January. 



Feb. 



March. 



April. 





June. 



O. 

 I. 

 2. 



3- 

 4- 



5- 

 6. 

 7- 

 8. 



9- 



IO. 

 12. 



«3- 

 14. 



15- 

 16. 



17- 

 18. 

 19. 

 20. 

 21. 

 22 

 23- 



85 

 85 

 83 

 83 

 89 



89 

 9 1 

 93 

 89 

 9i 

 88 

 88 

 88 

 88 

 88 

 86 

 86 

 88 

 90 

 90 

 88 

 90 

 87 

 89 



72 

 69 



67 

 66 

 67 

 68 



73 

 76 



78 

 81 

 82 



82 



84 

 82 



84 

 84 

 82 

 85 

 85 

 85 

 9 1 

 90 



& 



66 



65 

 64 



64 



65 

 68 



75 

 75 



I 9 

 81 



81 



81 

 85 

 85 

 87 

 87 

 87 

 89 

 93 

 93 

 97 

 80 



74 



70 



63 

 61 



60 



59 

 60 

 61 

 66 

 69 



75 

 80 



79 

 82 



85 

 88 

 88 

 86 

 90 

 90 

 88 

 88 

 82 

 76 

 71 

 67 



63 

 60 

 57 

 57 

 56 

 57 

 59 

 63 

 69 



77 

 81 



86 

 88 

 89 

 89 

 89 



9i 



88 



87 

 80 



74 

 66 



65 



53 

 5 2 

 52 

 5° 

 5° 

 5° 

 5 1 

 55 

 62 

 68 



74 



77 



/ / 



79 

 83 

 85 

 86 



87 

 87 

 82 



75 



64 



59 

 57 



52 

 49 

 47 

 46 



45 

 47 

 5° 

 54 

 60 



65 

 69 



72 



74 

 77 

 78 

 81 



83 

 82 

 80 



75 

 72 

 67 

 61 



56 



62 

 61 

 61 



60 

 58 

 62 



65 

 69 

 75 

 77 

 80 

 82 



•84 

 88 

 88 

 89 

 9 1 

 9 1 

 89 

 85 

 78 



74 



70 



67 



62 

 60 



59 

 58 

 61 

 60 

 69 

 75 

 79 

 81 



84 



85 

 88 



87 

 88 

 88 



QO 

 90 



88 

 9 1 

 85 

 86 



75 

 70 



72 

 69 

 68 

 69 

 74 

 77 

 81 

 78 

 88 



87 

 88 



QO 



9 1 

 9 1 

 9i 

 9i 

 9i 

 93 

 96 

 96 



94 

 90 

 84 

 77 



80 

 77 

 74 

 74 

 76 

 80 

 81 

 82 

 84 

 84 

 85 



8? 



j 



85 

 85 

 85 

 89 

 89 

 87 

 87 

 9 1 

 85 

 85 

 85 

 86 



84 

 81 

 81 

 83 

 84 

 84 



87 

 87 

 87 

 88 



87 

 87 



87 

 87 

 87 

 87 

 87 

 87 

 87 

 90 

 88 

 87 

 87 

 85 



9 1 

 9i 



89 

 88 



84 

 82 

 82 

 82 

 82 

 82 

 84 

 84 



84 



86 



85 

 86 

 86 

 84 

 84 

 86 

 88 

 87 

 89 

 89 



89 

 87 

 86 



85 

 83 

 82 

 81 

 81 

 82 

 82 

 82 

 81 

 81 

 81 

 82 

 82 

 81 

 82 

 82 



84 

 88 



89 



90 

 90 



73 

 71 



70 

 69 

 68 

 68 

 68 

 69 

 70 

 72 

 72 



72 



73 

 73 

 75 

 75 

 76 

 76 

 76 

 78 

 81 

 81 

 78 

 _24 



56 

 53 

 53 

 5 1 

 5i 

 48 

 56 

 61 

 64 

 67 

 68 

 60 

 71 

 71 

 73 

 74 

 74 

 76 

 75 

 74 

 69 

 63 

 59 

 57 



39 

 41 

 41 



40 



39 

 36 

 42 

 48 

 52 

 55 

 59 

 61 



64 



65 

 66 

 68 

 66 



7i 

 70 

 64 

 58 

 54 

 5° 

 47 



57 

 56 

 55 

 54 

 56 

 58 



59 

 64 

 70 

 73 

 74 



75 



79 

 80 

 81 

 82 

 83 

 83 

 81 



78 

 73 

 68 

 64 

 60 



Means 



88 



79 



79 



76 



74 



67 



64 



75 



78 



84 



83 



86 



86 



84 



73 



64 



54 1 6 9 



XII. " On the Connexion between oppositely disposed Currents of Air 

 and the Weather subsequently experienced in the British Islands." 

 By Robert H. Scott, M.A., Director of the Meteorological 

 Office. Communicated by the President. Received June 17, 

 1869. 



In the number of the ' Proceedings of the Meteorological Society ' for 

 February 1869, there is a paper by Mr. Charles Meldrutn, of the Mauri- 

 tius, on the connexion between the rotation of the wind in the Southern 

 Indian Ocean and the positions of oppositely directed air-currents. In 

 this paper the author expresses his opinion that the tropical hurricanes 

 of the Southern Indian Ocean invariably originate between two opposite 

 streams of air. 



More than a year previous to the appearance of Mr. Meldrum's paper 

 my own attention had been drawn to the occurrence in these islands of 

 some remarkable storms, which appeared to be connected with the previous 

 existence at the earth's surface of the two wind-currents, polar and equa- 

 torial, in close proximity to each other. 



The first occasion on which this was noticed by me was on January 22, 



