284. PROCEEDINGS OF SOCIETIES. 
but still to a certain extent under the moistenin 
vasttraetsof Prosopis spicigera, Salvadora and Ca 
north, in the Punjab, where the rainfall is more regular, and its annual 
amount approaches or exeeeds ten inches, these dry woodlands, mainlycom- 
of Prosopis, Capparis, and Salvadora, cover a vast extent of country 
between the rivers of that province. These woodlands are es 
eco 
zone, which I propose calling the dry region of India, and in which 
the normal rainfall is between fifteen and thirty inches. There a 
two zones of dry country; one running on the north and east of the 
the value of preserving the scanty thorny serub ou the hills, in order to 
= the filling of the tanks from rain is recognized by the larger land- 
olders. 
of the Madras Presideney. 
its limits, such 
India, fhis belt, which stretches from Nassick in the north, to — 
h, has a normal rainfall of less than thirty — 
Bellary, and Kurnool in the north, am 
inc 
Madura and Tinnevelly in the south. Over a great part of it 4 
e dal wood, Santalum album, a small tree with fra 
eart w 
but 
moist t 
i that, 
although the fall on the crest 
> 
