XV.

The dense pine forests on either side still attest the luxuriant growth, which was regarded at the time of its selection as the finest timbered land of all Georgia. These immense pines are even yet so near as to cast their lengthened shadows, at morning and evening, over the accursed area where so many noble men perished for want of shelter from the heat of the noonday sun, the chilling dews of evening, and the frequent rain. The shade temperature of this place sometimes rose to the height of 105 deg., even 110 deg. Fahrenheit. The sun temperature within the stockade must have risen to 120 deg. and upwards, for the height of the walls prevented the free circulation of the air. The heat of this region during the days of summer is unusually great.

[Illustration: VIEW OF OFFICERS' STOCKADE, with rebel camps and hospitals in the distance.--Page 21.]

Its elevation above the tide level is only about three hundred feet; and the hot blasts from the burning surface of the Gulf of Mexico, which is only about one hundred and fifty miles distant, sweep up over it northward, without being deviated or modified by ranges of mountains. The intervening country is unbroken, from distance to distance, by the undulation of the soil, and resembles more the level of a wide, green sea than the usual configurations of the solid earth. It bears the reputation of being unhealthy, and it is not strange; for there are certain isolated local climates which are absolutely pestilential, as we observe in the detached mountain groups and table lands of India and Southern Europe. Its isothermal line passes through Tunis and Algiers, and the hyetal charts show it to be one of the most humid regions in America.

Fifty-five inches of rain fall here annually, whilst Maine, with her constant fogs, receives but forty-two and England but thirty-two.

Was it possible for human life to endure these extremes of heat, rendered still more positive by exposure to the damp and chilly dews of the nights of southern latitude? It is a well-known fact, that neither men nor animals can labor or expose themselves with impunity to the rays of the noonday sun of tropical climes. Man, of all terrestrial animals, is the least supplied with natural protectives.