DISCUSSION 
twenty bars, very solid and rigid, with diameters 
of the order of three millimeters, and we collected 
enormous amounts of water which reach the order 
of a quart, on many occasions, in about two 
hours. The frame is about two feet by one foot. 
The fog on Mt. Washington is sometimes very 
thick. 
Dr. Weickmann—What we have just heard 
may have important applications to anyone who 
is interested in or in charge of conserving the 
water in regions where the mountains often reach 
into the base level of clouds. No trees should 
be cut from the tops of these mountains, because 
117 
these trees are important collectors of other- 
wise unprecipitated water. 
Dr. Bergeron—\ wonder if anybody of those 
present has visited that wonderful place on a 
small mountain in Portugal named Cintra*. It has 
a castle on top of it. On the top, which is small 
and isolated, one is in a tropical rain forest. One 
looks down on the desert toward Lisbon. Fog 
drip must be the explanation for its rich vegeta- 
tion. 
* Serra da Cintra, rugged mountain mass, north 
of Lisbon. Highest peak Cruz Alta (1772 ft); castle 
is Palacio da Pena—Ed. 
