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We have a few observations to press upon our tourist friends, in reference to

60. Thirst; as, from the ignorance of many about the real danger of inducing disease, and even death itself, by too sudden a cooling of the heated system, we desire to make ourself clearly understood on this important subject. First, in order to convince any wilful or heedless reader, if there be such, who may peruse these pages, and for none more than for them are these To hints” written,) that the subject has been one of earnest, cautious entreaty from the lips of experience and enlightened reflection: we shall open our own remarks by quoting those of other people, qualified to express that opinion from actual experience, even more than ourselves. Col. Shaw says, as referring to a grave matter wherein the temptation to transgress is never stronger, because a gratification is associated with an urgent and imperative necessity,-" To prevent thirst in hot weather, nothing is better than to take a great quantity of fresh butter with your breakfast. Avoid drinking as you would poison ; in short, drink as little as possible of anything, and do not give way to the first sensation of thirst. I should strongly recommend starting at daybreak, having previously taken breakfast.” An old hand at walking remarks" Be not always tempted by the crystal fountains you may meet with, being yourself warm. Should your thirst be overwhelming, take a mouthful; keep it for some seconds in the mouth, so as to warm it a little before swallowing. Never take ices except in brandy or other spirit, and then only being quite cool yourself.” We shall use the liberty of completing the quotation, though it passes on to correlative points; because we have no especial head under which to reduce them precisely. Our continental friend M. M. goes on to urge “Drink not anything cold, being hot. Pull not off your clothes when in perspiration, neither sit in draughts of air nor upon moist turf or moss; but rather, if you must take liquid, make use of a drop of real eau de vie (brandy) or other spirit, because, when the whole body is excessively heated, any cold beverage suddenly gulped down in the eagerness of gratifying thirst too rapidly cools down the blood, and checks dangerously the circulation ! See that the food you take be fresh, and not greasy" (that is, not bad or old). I shall be excused in presenting one more additional quotation in reference to the effects of water as applied to the skin in allaying thirst, borrowed from the narrative of the gallant officer before mentioned :-“ The heat was dreadful, and the enemy had cut the ropes of the different wells. I had learned, from my walking experience, that to thirsty men drinking water only gives momentary relief, but that if the legs are wetted, the relief, though not at first apparent, positively destroys the pain of thirst. Seeing a muddy pool at the bottom of one of the hills, by which we must pass to attack the convent of Bostillo, I halted for a few minutes, making the men wet themselves from the knees downwards.” Satisfied of the correctness of this easy plan, we have introduced in the frontispiece the plan as it should be carried out for a moment or two only. Against this plan an objection has been pointed out, based upon the fear of danger from plunging the legs in water, orwetting them. A party so looking at it has recommended, the method of rinsing the mouth with cold spring water, and the use of a soft tooth-brush, as refreshing and quenching to the thirst, without the risk of evils attending the swallowing part of the business. We can only say, that this rinsing is very good and unexceptionable where and when practicable only that where the rinsing can be put in practice, the temptation to the swal lowing presents itself; and we think there are few minds strong enough to resist an involuntary, though intentionally moderate, pull at a glass of sparkling cold spring water, under the exciting urgency of thirst, if raised to the lips once and oftenerin order to accompany and second the tooth-brush. Now, with Col. Shaw's plan, undrinkable, unrinsible, muddy water will afford a relief, free from any great risk, providing the aspersion of the feet and legs be not too suddenly done or too prolonged. The rule may be safely laid down that this experiment is free from harm, if practised for a moment or two only; or, as we would prefer, plunging the legs in and out of the water two or three times, and no more; so as to anticipate that sudden and general refrigeration of the whole body, which is manifested warningly by a feeling of chill, and which is the point where all danger would be likely to set in, whereby the balance of the circulation is destroyed, and congestion of the vascular (circulating) system is on the eve of taking place towards some important part of the body, determined according to the comparative weakness or strength of the various organs towards the one with the least vital tone-in other words, the weakest. Whilst we have thus acknowledged the possible danger, and even described its mode of setting in, in order to place the pedestrian on his guard, we do maintain that if he will take the rule just broached - viz., to beware of the chill (not herein only, but under all' manner of cooling indulgences)—for a guide, he will be ordinarily safe in the practice of this mode, when the nature of the water resorted to may be such as to put a stop to the rinsing attempt altogether, unless he have the limited taste of the Esquimaux. Extreme recommendations are the least likely to be carried out, except by a resolute and prudent few ; therefore, we shall conclude our remarks touching thirst

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