Observations on the Diseases of Seamen

by Sir Gilbert Blane

Should any officer object to the trouble and inconvenience of all this, let him reflect for a moment how much more troublesome and inconvenient, as well as noisome and disagreeable, sickness itself proves to be; let him reflect that the efficiency of the ship, considered as a bulwark of defence, or an engine of annoyance, depends on the number of healthy hands, and that his own character is to depend on the exertions to be made by them in the day of battle, not to mention the attention due from him as a man to the sufferings of the objects themselves.

But besides these recent infections, it sometimes happens that the seeds of disease adhere to the timbers of a ship for months and years together, and can be eradicated only by a thorough cleansing and fumigation. Sweeping, washing, scraping, and airing, are not sufficient entirely to remove the subtile infectious matter; but they will assist and will prepare it to be acted upon by heat and smoke, which are the only means to be depended upon. A complete fumigation can only be performed when the ship is in dock; and I shall here transcribe a method recommended by Dr. Lind.

“It will be proper to remove every thing out of the ship, so that the hold may be swept, and, when the men have withdrawn, to light a number of charcoal fires in different parts, and to throw a handful or two of brimstone on each. The steam of these should be closely confined by shutting the ports and hatchways from morning till evening, no person in the mean time being allowed to go below, nor for some time after opening the ports and hatchways, that the steam may be dispersed.

“In order to purify the men’s clothes, it would farther be proper to fumigate the hulk into which they are removed with tobacco once or twice a week while their ship is in dock, the men remaining below as long as they can bear it.

“The clothes and hammocks of the men should be exposed in the hulk to the smoke of the tobacco, and those which are more particularly suspected may be hung up the ship, and exposed to the steam of the charcoal and brimstone.

“The ship having been already fumigated with tobacco, it will be sufficient to use the fumigation of charcoal and brimstone above described for three days, and, after the last day’s fumigation, the inside of the ship should be well washed with boiling vinegar, and, before the men return on board, all the decks should be scraped and washed.”

When a ship is at sea, these precautions cannot be taken so completely; but if infection is present, or is suspected, then cleansing and fumigating may be practised in a less degree. I have known a ship at sea fumigated with gunpowder kneaded with vinegar, so as to prevent it from exploding, and to make it burn slowly with a spattering flame. Flowers of sulphur[53], with about an eighth part of nitre, will answer still better. A quantity of these is placed in each interval of the guns between decks, every person being turned up, and the ports and hatches shut till they are consumed, and till the smoke has dispersed. It has also been recommended to burn resinous bodies, such as the woods of fir, spruce, and juniper, as the smoke of these is more salutary. Upon the same principle, the effluvium of tar is thought wholesome; and the cables that are coiled in the lower parts of a ship being soaked with tar, like most of the other ropes of a ship, probably conduce to the health of a place otherwise dank and unwholesome. Fumigation may also be performed by means of tar, either by throwing it on red-hot irons, or a wood fire, which may be carried about between decks in a pot or moveable grate, or over some cannon balls in a tub, or by immersing a red-hot loggerhead[54] in a bucket of tar. If this is done in the place occupied by the sick, it will have a still better effect; and it will be of service to them to be removed for a short time under the half deck or forecastle till this or other means of purification are put in practice. In whatever manner fumigation is performed, it will be of service to spread out the clothes and bedding of the men, or to hang them upon lines, that they may be exposed to the heat and smoke.

It will also be of great service to make the men expose their frowsy clothes to the sun and wind. If a strong infection is suspected, and it cannot be afforded to destroy the clothes, the best means of eradicating the poison is to hang them for a length of time over pots of burning brimstone in a large cask standing endways, with small apertures to admit air enough for the brimstone to burn.

Fire in every shape is to be considered as the principal agent of purification, by its heat and the ventilation it occasions, perhaps, still more than its smoke. It has already been repeatedly inculcated, that the great enemies of infection are ventilation and heat. I have mentioned smoke and the effluvia of balsamic bodies, but these are not to be depended on; and it is the more necessary to mention this, as the attention bestowed on more trifling means may divert the mind from a proper regard to what is more essential. It is mentioned by the benevolent Mr Howard, that it is the custom in some parts abroad to scatter fresh branches of pine or spruce in the hospitals, in order to purify the air; but, trusting to this, they neglect the admission of fresh air, which is the only effectual method of sweetening the air.

There is reason to think that the open air very soon dissipates and renders inert all infections of the volatile kind, and of course the warmer the air is the more readily it will have this effect. It is accordingly observed, that infection is much less apt to be generated about the persons of men, and that it adheres to them for a much less space of time in a hot climate than in a cold or temperate one. This is a remark, which, so far as I know, has not been made by any author; and, till observation suggested it to me, I fancied the reverse to be the truth. I have seen so many instances of filth and crowding in ships and hospitals in the West Indies, without contagion being produced, and which in Europe could hardly have failed to produce it, or to render it more malignant, that I am convinced there is something in tropical climates unfavourable to the production and continuance of infectious fevers[55]. The ships which bring this fever from Europe in general get rid of it soon after arriving in a warm climate; and nothing but the highest degree of neglect can continue or revive it.