40 



feet. Yet it is this thin stratum of cloud that gives the 

 h)wlan(ls so many gloomy days in winter, while on the 

 mountain there is no cloud from sunrise to sunset. It is 

 on such days, when it is serene there and cloudy below, 

 that wc have a high temperature comparatively. This 

 has been noticed in Europe. On the Brocken, in winter, 

 under similar conditions, it is warmer than at lierlin. 



In April there was the finest possible display of cumuli, 

 an immense mass of cloud many thousand feet vertically 

 and miles in extent. We may sec the lower currents 

 moving in ditferent directions at the same time. Imme- 

 diately around the mountains if they run low, they follow 

 the line of the several ranges. It is not unusual at all 

 seasons to see them on a S. E. course south of Mount 

 Washington, and north of Mount Adams a S. W. one at 

 the same time. Condensation may l)o going on at one 

 point, in a contrary one, but a few miles distant, the cloud 

 is re-dissolving. A distinguished French savant has said 

 that he never saw, on the Alps, the tbrmation of a cloud. 

 A close observer, living on jNIount Washington will have 

 many opportunities to witness condensation over the sum- 

 mit. We did frequently, and Dr. Brewer of Boston has 

 informed me that he once observed this on ^Nlt. Washing- 

 ton. 



[To be coiilimied.l 



