What Is the "Hill Fever of Mysore and Deccan"?

Sir,?Can any of your readers give any information as to the nature of what has been called the " Hill Fever" of Mysore and the Deccan 1 In reading an account of malaria* recently, I came across the following: " The hill fever of Mysore occurs among bare rocks, stones and brown earth, at the hottest season from March to June, when the rocks in the sun show a surface temperature of 220?F. and rapidly cool after sunset." A similar fever (malarial) is said to prevail near the bare rocks of a cataract on the river Orinoko, where there is great absorption of heat and rapid radiation. Does this fever still prevail in the hot season in the Deccan, &c.? Is it malarial ? How does the mosquito theory apply here ?