Dr. Harrison makes some observations on the effects of imperfect drainage in aggravating the evils intended to be remedied, of which frequent instances are presented in the course of this inquiry:—
“A grazier of my acquaintance has, for many years, occupied a large portion of an unenclosed fen, in which was a shallow piece of water that covered about an acre and a half of land. To recover it for pasturage, he cut in it several open ditches to let off the water, and obtained an imperfect drainage. His sheep immediately afterwards became liable to the rot, and in most years he lost some of them. In 1792 the drains failed so entirely, from the wetness of the season, that he got another pond of living water, and sustained, in that season, no loss of his flock. For a few succeeding years, he was generally visited with the rot; but having satisfied himself by experience, that whenever the pit was, from the weather, either completely dry or completely under water, his flock was free from the disorder, he attempted a more perfect drainage, and succeeded in making the land dry at all times. Since that period he has lost no sheep from the rot, though, till within the last two years, he continued to occupy the fen. * * *
“Mr. Harrison, of Fisherton, near Lincoln, has by judicious management laid the greatest part of his farm completely dry, and is now little troubled with the rot, unless when he wishes to give it to some particular animals. His neighbours, who have been less provident, are still severe sufferers by it, nor are their misfortunes confined to sheep alone. Pigs, cows, asses, horses, poultry, hares, and rabbits, become rotten in this lordship, and have flukes in their livers. * * * *
“The late Mr. Bakewell was of opinion, that after May-Day, he could communicate the rot at pleasure, by flooding, and afterwards stocking his closes, while they were drenched and saturated with moisture. In summer, rivers and brooks are often suddenly swollen by thunder-storms, so as to pass over their banks, and cover the adjacent low lands. In this state, no injury is sustained during the inundation; but when the water returns to its former channel, copious exhalations are produced from the swamps and low lands, which are exceedingly dangerous to the human constitution, and to several other animals, as well as sheep. * *
“A medical gentleman of great experience at Boston, in Lincolnshire, and who is considerably advanced in life, has frequently observed to me, that intermittents are so much diminished in his circuit, that an ounce of the cinchona goes further at this time in the treatment of agues than a pound of it did within his own recollection. During his father’s practice at Boston, they were still more obstinate and severe. For my own part, I have declared, for several years, in various companies, that marsh miasmata are the cause of both agues and the rot. And as miasmata are admitted, by the concurring testimonies of medical practitioners in every part of the globe, to be produced by the action of the sun upon low, swampy grounds, I hope this interesting subject will be fully investigated, and effectual plans carried into execution, for the preservation of man, and of the animals which are so useful to him.”
I may here mention a circumstance which occurred at the Poor Law Commission Office, and which with succeeding information tended to direct our attention to the subject of sanitary measures of prevention for the protection of the rates. A medical officer of one of the Unions who came to town for the transaction of some business before the Board, begged to be favoured by the immediate despatch of his business, inasmuch as, from a change of weather which had taken place since his departure, he was certain that he should have a number of cases waiting for him. On being asked to explain the circumstances from which he inferred the occurrence of disease with so much certainty, he stated that within his district there was a reservoir to feed a canal: that they had let out the water as they were accustomed to do in spring time for the purpose of cleansing it; and that whenever such weather occurred as then prevailed during the process, he was sure to have a great number of fever cases amongst the labourers in the village which immediately adjoined the reservoir. It appeared to be, in fact, a case in which the rot was propagated amongst the labourers in the village under circumstances similar to those before cited in which it was propagated amongst the sheep.
The following portions of evidence afford instances of the condition in which a larger proportion of the country remains, from the neglect of general land drainage, than would be conceived from any à priori estimate of the amount of prevalent intelligence and enterprize.
Mr. R. W. Martyr, one of the medical officers of the Langport union, thus describes the condition of a large proportion of his district:—
“The parishes of Kingsbury and Long Sutton being the district No. 1 B of the Langford union, the population of which amounts to above 3,000; Kingsbury, containing 2,000; and Long Sutton 1,000, or thereabouts. Both these parishes are partly surrounded by low meadow land, and are liable to frequent inundations, often covering many thousand acres, and sometimes to a great depth; the level of much of this land being below the bed of the main river or drains, makes it very difficult (when once inundated) in very wet seasons to drain or carry off the immense body of water they often contain.
“These inundations are caused by the banks of the main rivers not being sufficiently strong or elevated, and from the bridges not being capacious enough to carry the immense body of water brought down from the neighbouring hills and country higher up, which, in heavy rains, sometimes takes place so rapidly as to completely overflow the banks in twenty-four hours; but besides the casual or accidental giving way of the banks of the rivers, it is sometimes done by interested persons for the purpose of warding off the mischief from themselves by throwing it on their neighbours.