12. M. Hanasliima : Measurement of the Total and Liquid Water Content 



of Fog 



By the method mentioned in the item 3 above the total water content 

 in fog was measured, and, combining with the humidity values obtained 

 from the concurrent observation by means of aspiration psychrometer, 

 the liquid water content of fog was calculated. As the results of this it 

 was found that the liquid water content of fog is 0-7 gram, on an average, 

 and utmost about 1-0 gram in 1 cubic meter. These measurements were 

 made on the ground as well as on a balloon . 



13. C. Magono : Measurement of Humidity in Fog by Means of the 



Aspiration Psychrometer 



As the results of humidity observation in fog by means of the aspiration 

 psychrometer with a simple fog filter it was ascertained that in most' 

 ■cases the mean humidity in the fog is less than 100 per cent. 



14. A^. Inoue and H. Xakayama : Fog and Snow-proof Wind Channel and 



and Electric Psychrometer 



Using the eddy current and the Cottrell's dust-collecting methods, 

 the authors constructed a wind-channel, free from snow and fog, by means 

 ■of which precise measurements of humidity were made. Also they devised 

 a psychrometer utilizing the surface resistance of some organic substance 

 against the leakage current to investigate the microscopic variation of 

 Tiumidity in the fog. 



15. H. Oguchi : Observations of the Condensation and Evaporation of Fog 



Particles 



On fine days just after rain the author observed how the water vapour 

 evaporated from the surface of the earth, condenses into very fine fog 

 particles by contact with the cold air mass advected from the ocean and 

 how these fog particles evaporate again. 



16. N. Inoue and H. Nakayama : On the Visibility in Fog 



The errors in the observation of visibility arising from the difference 

 in the size and colour of the visibility plate, personal error in estimating 

 the visibility, and the difference of visibility in the horizontal and vertical 

 direction were investigated. The authors also found that the visual 

 range is at least 150 m. in the sea fog of Nemuro even in its densest case, 

 while it can be frequently about 30 m. in the cloud at the top of the 

 Mountain Niseko. 



17. /. Yoshida and K. Uno : Meastirement of the Scattering of Light Due 



to Natural Fogs 



The authors measured the intensity of scattered light in the fog at 

 the top of the Mountain Niseko by a simple lux-meter. As the results of 

 this a maximum of the intensity of scattered light was found at the 

 scattering angle of 142° for those fogs, consisting mainly of particles about 

 10/Li in diameter, while there is not such a maximum in the case of haze, 

 where the size of particles is fine. 



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