It appears that in this part of Oude the people have not for many years suffered so much from the depredations of the refractory landholders as in other parts; and that the desolate state of the district arises chiefly from the other three great evils that afflict Oude—the rack-renting of the contractors; the divisions they create and foster among landholders; and the depredations of the troops and camp-followers who attend them. But the estate has become much subdivided, and the shareholders from this cause, and the oppression of the contractors, have become poor and weak; and the neighbouring landholders of the Janwar and other Rajpoot tribes have taken advantage of their weakness to seize upon a great many of their best villages. Out of Kurumpoor, within the last nine years, Anorud Sing, of Oel, a Janwar Rajpoot, in collusion with local authorities, has taken twelve; and Umrao Sing, of Mahewa, of the same tribe, has taken eighteen, making twenty villages from the Kurumpoor division. These landholders reside in the Khyrabad district, which adjoins that of Mahomdee, near our present camp.

The people everywhere praise the climate—they appear robust and energetic, and no sickness prevails, though many of the villages are very near the forest. The land on which the forest stands contains, in the ruins of well-built towns and fortresses, unquestionable signs of having once been well cultivated and thickly peopled: and it would soon become so again under good government. There is nothing in the soil to produce sickness; and, I believe, the same soil prevails up through the forest to the hills. Sickness would, no doubt, prevail for some years, till the underwood and all the putrid leaves should be removed. The water that stagnates over them, and percolates through the soil into the wells, from which the people drink, and the exhalations which arise from them and taint the air, confined by the dense mass of forest trees, underwood, and high grass, are, I believe, the chief cause of the diseases which prevail in this belt of jungle.

It is however remarkable, that there are two unhealthy seasons in the year in this forest—one at the latter end of the rains in August, September, and October, and the other before the rains begin to fall in the latter part of April, the whole of May, and part of June. The diseases in the latter are, I believe, more commonly fatal than they are in the former; and are considered by the people to arise solely from the poisonous quality of the water, which is often found in wells to be covered with a thin crust of petrolium. Diseases of the same character prevail at the same two seasons in the jungles, above the sources of the Nerbudda and Sohun rivers, and are ascribed by the people to the same causes—those which take place after the rains, to bad air; and those which take place immediately before the rains, after the cold and dry seasons, to bad water. The same petrolium, or liquid bitumen, is found floating on the spring waters in the hot season, when the most fatal diseases break out in the jungles, about the sources of the Nerbudda and Sohun, as in the Oude Tarae; and, in both places, the natives appear to me to be right in attributing them to the water; but whether the poisonous quality of the water be imparted to it by bitumen from below, or by the putrid leaves of the forest trees from above, is uncertain; the people drink from the bituminous spring waters at this season, as well as from stagnant pools in the beds of small rivers, which have ceased to flow during part of the Cold, and the whole of the hot, season. These pools become filled with the leaves of the forest trees which hang over them.

The bitumen, in all the jungles to which I refer, arises, I believe, from the coal measures, pressed down by the overlying masses of sandstone strata, common to both the Himmalaya chain of mountains over the Tarae forest, and the Vendeya and Sathpoor ranges of hills at the sources of the Nerbudda and Sohun rivers. It is, however, possible that the water of these stagnant pools, tainted by the putrid leaves, may impart its poison through the medium of the air in exhalations; and I have known European officers, who were never conscious of having drunk either of the waters above described, take the fever (owl) in the month of May in the Tarae, and in a few hours become raving mad. These tainted waters may possibly act in both ways—directly, and through the medium of the air.

While on the subject of the causes or sources of disease, I may mention two which do not appear to me to have been sufficiently considered and provided against in India. First, when a new cantonment is formed and occupied in haste, during or after a campaign, terraces are formed of the new earth dug up on the spot to elevate the dwellings of officers and soldiers from the ground, which may possibly become flooded in the rains; and over the piles of fresh earth officers commonly form wooden floors for their rooms to secure them from the damp, new earth. Between this earth and the wooden floor a small space of a foot or two is commonly left. The new earth, thus thrown up from places that may not have been dug or ploughed for ages, absorbs rapidly the oxygen from the air above, and gives out carbonic acid, nitrogen and hydrogen gases, which render the air above unfit for men to breathe. This noxious air accumulates in the space below the wooden floor, and, passing through the crevices, is breathed by the officers and soldiers as they sleep.

Between the two campaigns against Nepal in 1814 and 1815, the brigade in which my regiment served formed such a cantonment at Nathpoor, on the right bank of the river Coosee. The land which these cantonments occupied had been covered with a fine sward on which cattle grazed for ages, and was exceedingly rich in decayed vegetable and animal matter. The place had been long remarked for its salubrity by the indigo-planters and merchants of all kinds who resided there; and on the ground which my regiment occupied there was a fine pucka-house, which the officer commanding the brigade and some of his staff occupied. In the rains the whole plain, being very flat, was often covered with water, and thousands of cattle grazed upon it during the cold and hot seasons. The officers all built small bungalows for themselves on the plan above described; and the medical officers all thought that they had, in doing so, taken all possible precautions. The men were provided with huts, as much as possible on the same plan. These dwellings were all ready before the rains set in, and officers and soldiers were in the finest state of health and spirits.

In the middle and latter part of the rains, officers and men began to suffer from a violent fever, which soon rendered the European officers and soldiers delirious, and prostrated the native officers and sipahees; so that three hundred of my own regiment, consisting of about seven hundred, were obliged to be sent to their homes on sick leave. The greater number of those who remained continued to suffer, and a great many died. Of about ten European officers present with my regiment, seven had the fever, and five died of it, almost all in a state of delirium. I was myself one of the two who survived, and I was for many days delirious.

Of the medical officers of the brigade, the only one, I believe, who escaped the fever was Adam Napier, who, with his wife and children, occupied apartments in the brigadier's large pucka-house. Not a person who resided in that house was attacked by the fever. There was another pucka-house a little way from the cantonments, close to the bank of the river, occupied by an indigo-planter, a Mr. Ross. No one in that house suffered. The fever was confined to those who occupied the houses and huts which I have described. All the brigade suffered much, but my regiment, then the first battalion of the 12th Regiment, and now the 12th Regiment, suffered most; and it was stationed on the soil which had remained longest unturned and untilled on what had been considered a park round the pucka-house, in which the brigadier resided. I believe that I am right in attributing this sickness exclusively to the circumstances which I have mentioned; and I am afraid that, during the thirty-five years that have since elapsed, similar circumstances have continued to produce similar results. I am myself persuaded, that had the sward remained unbroken, and the houses and huts been raised upon it, over wooden platforms placed upon it, to secure officers and men from the damp ground, there would have been little or no sickness in that brigade.

The second of the two causes or sources of disease, to which I refer, is the insufficient room which is allowed for the accommodation of our European troops in India. Within the room assigned for the non-commissioned officers and soldiers, they soon exhaust the atmosphere around of its oxygen or vital air, while they expire or exhale carbonic acid, nitrogen and hydrogen gases, which render it altogether unfit to sustain animal life; and death or disease must soon overtake those who inhale or inspire it.

I may illustrate this by a fact within my own observation. In 1817, a flank battalion of six hundred European soldiers was formed at Allahabad, where I then was with my regiment to escort the Governor-General the Marquess of Hastings. With these six hundred soldiers there were thirty-two European officers. The soldiers and non-commissioned officers were put into the barracks in the fort, where they had not sufficient room. The commissioned officers resided in bungalows in the cantonments, or in tents on the open plain. The men were effectually prevented from exposing themselves to the sun, and from indulging in any kind of intemperance, and every possible care was taken of them. The commissioned officers lived as they liked, denied themselves no indulgence, and were driving about all day, and every day, in sun and rain, to visit each other and their friends. A fever, similar to that above described, broke out among the soldiers and non-commissioned officers in the fort, and great numbers died. Of the six hundred, only sixteen escaped the fever. When too late, they were removed from the fort into tents on the plain. From that day the deaths diminished, and the sick began to recover. Of the thirty-two commissioned officers, only one, I think, was ever sick at all, and his sickness was of a kind altogether different; and, it is impossible to resist the conclusion, that the non-commissioned officers and soldiers got their disease from want of sufficient room, and, consequently, of sufficient pure air to breathe. Subsequent experience has, I believe, tended to confirm the conclusion; and, I may safely say, that more European soldiers have died from a disregard of it, than from all the wars that we have had within the thirty-three years that have since elapsed. The cause is still in operation, and continues to produce the same fatal results, and will continue to do so till we change the system of accommodating our European troops in India.