BRIGHT CLOUDS ON A DARK NIGHT SKY. 21 



otherwise always above, any massive cumulus clouds, as testified by the 

 Teneriffe observations of 27 years ago. 



But the whole purport of the Meteorological data we have collected and 

 discussed from 27 Observatories, large and small, shows without contro- 

 versy that a most unusual wave of dryness did pass across Scotland on that 

 particular 8th of April day. Below the level of the clouds too, because so 

 distinctly perceived and felt on the inhabited surface of the earth ; but having 

 its maximum probably at 2000 feet or more above the sea-level, because 

 recorded as greater in amount at the hill, than the valley (but everywhere beneath 

 the clouds), stations of the Scottish Meteorological Society. 



