436 Scientific Intelligence. 
miles across, on which this plant was growing abundantly; that is to say, I 
saw about thirty specimens on my line of march. e plain was perfectly 
dry, and bare of other vegetation than the W’elwitschia and a little short grass. 
The ground was a hard quartzose schist. The Welwitschia was generally 
growing near the little ruts worn in the plain by running water during the 
rainy season.” 
And from Damara Land, Mr. Anderson writes that,— 
“ Rain rarely or never falls where this plant exists. [Yet the night dews 
are heavy, as other authorities mention.} I have crossed and recrossed Damara 
Land throughout its entire length and breadth, but only found the plant grow- 
ing on that desperately arid flat, stretching far and wide about Walvisch Bay.” 
varing it in th 
ea 
