1898- 1U02. No. 4.] 



CLOUD-MOTION. 



335 



The prevalent direction of the lower clouds and of the wind is the 

 same in 8 months. In the other 4 months, April, July, August and 

 December, the prevalent direction of wind is the same as the most pre- 

 valent direction but one of the motion of the lower clouds. 



The directions of the motion of the higher clouds (cirrus, cirro- 

 stratus) and the frequency with which they occur, are shown in the 

 following Table in the same maimer as above. 



January . . 



February . 



March . . 



April . . . 



May . . . 



June . . . 



July . . . 



August . . 

 September . 

 October . . 

 November . 

 December . 



9-5 

 15 



22 

 27-5 



3° 



2 



24 

 17 



4-5 

 5 



NE 



9 

 13 

 31-5 

 10 



8 



I 



3 



5 



7-5 



12 



8 



8 

 IS-S 

 23 



6 



5 

 5 

 9 

 8 



3 

 3 



SE 



3 



3 



7 



8.5 



3 



5-5 



SW 



12 



7-5 

 29-5 



9 

 14-5 

 42 



4 



1-5 

 195 



21-5 



14 



0-5 

 o 



W 



5 

 20.5 



12.5 

 10 



5-5 



NW 



2.5 

 2 



4-5 

 10 

 8 

 3 



5 



Total 



27 



35 



46 



106 



135 

 100 

 116 

 20 

 53 

 44 

 33 



Winter . 

 Spring . 

 Summer 

 Autumn . 



Year 



22 

 46-5 

 59-5 

 45-5 



4 

 53-5 

 19 



15-5 



23 

 44-5 

 16 

 20 



6 



18.5 

 13-5 



15 



13 

 46 

 60.5 

 18 



173-5 



92 



I03-5 



53 



137-5 



I 



42.5 

 24 



0-5 



3 

 26.5 

 22.5 



6.5 



68 



58.5 



41 



74 

 287 

 236 

 130 



727 



The higher clouds move in all directions. 

 Tiie prevalent directions are 



in winter from N and NE, 



in spring from NE and SSW, 



in summer from N and S, 



in autumn from N. 

 The prevalent directions for the whole year are N and S. Motion 

 from SE and NW is relatively rare. 



