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tree. Such things as have a strong taste, are like1" wise commended, that is, all in which a salt prevails, because its acrid nature disagrees with the worm, and obliges it to leave the body. For this reason, I would propose sa!t-petre, and sal-ammoniac; and mineral waters, both cold and hot. The common people are hot ignorant of the use of these. People who inhabit the sea coasts, give their children sea water to drink, and those who live inland, cure them with water used in.the resining of salt. Neither would I reject the vitriolic salts obtained from metals, such as sal martis, and lunar crystals. Orange and lemon juice, spirit of vitriol, spirit of salt-petre, and clyssus of antimony, are beyond every thing in putrid severs, proceeding from worms: but the dose must be cautioufly prescribed, as the too great acidity of these remedies would convert the chyle into a solid substance. The risque of mistaking, with regard to children at the breast, obliges me to warn against the consequences; for whatever the proportion might be, it would not fail to coagulate the milk on their stomach. Hartshorn, sal ammoniac, and other volatile spirits have likewise the properties of a vermifuge. The fame may be said of astringents: various experiments on tea, the rind of the pomegranate, and root of the mulberry have long ago brought them into repute. Purgatives, likewise, ought not to be rejected, provided they be accompanied with turbeth or jalap, and that care is taken to prepare the patient by suitable medecines. It opium be thought proper, or other anodynes, I would strongly recommend caution, for instead of a cure, the consequence might be a sever.

"When worms have got into the stomach, we should not only proceed in the manner directed above, but they must be attracted towards the lower intestines, by injections of honey and milk. Dulciiied mercury Is, in this cafe, considered as the prime specific; but, in the use os it, two things must be attended to, with great care: First, not to give it in the form of powder, or in too great quantity:— Secondly, to abstain from it, when the duodenum is surcharged with acrimony. In my opinion, it would be best to prescribe it in the form of an electuary, or rather in troches, which seems to be the safest way. But the physician must judge, and prescribe for his patients, according to their age, their strength and constitution: he must find the means of speedily discharging those worms which he has been successful in destroying, lest they become more prejudicial after their death, than they were when alive.

The poison of insects is cured with the assistance of antidotes. If any external part is affected, terra sigillata may be applied, root of gentian, and angelica, leaves of carduus benedictus, sage, rue, juniper berries, oil of citron, serpent stone, scorpion, tarantula, and other venomous insects, provided they are bruised. These are so many emollients and aperitives, but which would not be sufficient for any internal part. Whether the poison of an insect, which has been swallowed, resides in the stomach, or has already mixed with the mass of blood, there is a ne» ceflity for counterpoisons, as active and effectual; such as the glossopetræ, cinnabar, oil of almonds, mallows, and wormwood, gentian wine, milk, butter, lard, viper's flelhj oil of scorpions, &c.

Of antidotes in general, none appears to me so singular, as that for the bite of the tarantula. It consists not in the sympathy of animals, nor in the strength of metals, nor in the quintessence of vegetables: it is in music alone that it must be sought* It has so much influence on the affected persons, that it puts all their sluggish members in motion, so that

I i 2 they they get up and dance till they put themselves iniS a profound sweat, and then fall down in a lethargy. The perspiration continues, during this state of rest, which frees the body from the poison diffused thro' it. Another singularity is, that the fame air does not always produce the fame effect; various kinds must be tried, till one suited to the quality of the poison is found; there is, however, one favourite air, which is agreeable to almost all the patients; if is called, by the Italians, /' Aria Turchesea. Neither is the lame instrument of music always used, one patient desiring the tambour, another the flute, the hautboy, the harp, the violin, &o and each dances and agitates himselfy tiM the strength of the pwison is evaporated by the violence of the motion. The difference of symptoms observable hi different patients, is observable in the tarantulas themselves. They are of various colours, and when taken, they are placed on thin boards, laid over a vessel of water. At the found of a musical iustrument, some are seen to leap, others remain at rest, according, to the difference of their temperament.

Before concluding this chapter, I have to mentiorl one or two other methods of destroying flies. Regulus of arsenic is a most deadly poilon to them* and the use of it could not be sufficiently recommended, if it were •possible to expect the necessary attention from those employed in preparing it; bur, the carelessness of most people^ makes me almost inclined to decry this method, notwithstanding its sue* cess. I leave it, therefore, to the prudence of those who are acquainted with its effects, and who are cautious in trying the experiment, to provide for the safety of themselves and their families. This poison is given to flies in a cup, or in earthen vessels made en purpose.

In

In 1735 appeared an anonymous work containing the description of an apparatus for destroying fleas'. In 1729 was published the third edition of a curious work on a fort of trap for these insects. The reader may consult these works, and profit from the receipt of Dr SouthaH an Englishman, who acknowledges his having got it from a negro. This receipt has the singular effect of attracting the whole fleas in a house to the lame spot where their death awaits them.

CHAP. VI.

Of The Improper Use Of Insects In The Affairs Of Life.

"when mankind neglect to make a good use of realon, and give themselves up to vain and chimerical speculation, there is nothing in nature which they may not pervert into a source of delusion. Every object however which we behold is distinctly marked with its own peculiar character which cannot be mistaken unless we willingly deceive ourselves. This is the cafe of those persons who presume to look into futurity, and who apply things to other uses, than those for which God intended them. Matthiolus tells us that every gall that grows on the oak, if it has not a hole in it, does without exception contain either a fly, or a fpu der or a worm j that the first foretokens war, the

second second pestilence, and the third famine. The rage for predicting future events is carried still farther: other visionaries combine the events of the former prophecy and assert that a swarm of locusts is a certain sign, that the country will be afflicted with these .three scourges at one and the fame time. Nay we have seen people mad enough to maintain that they have read on the wings of these insects characters signisicant of the above predictions. Ignorance and learning have both contributed to the delusion, there is hardly any thing in lise, which does not give notice of something good or bad about to happen. Among our domestic insects there is one that gnaws and beats with so much regularity, that it imitates the beating of a watch, and has accordingly got the name of the death-watch, because when it is heard some foolish people believe that the death of some person in the family will soon happen. To consirm such predictions, examples are produced j but what reliance can he had on prooss so ill founded? When two tbings happen in succession who hath told us that God meant to point out by the peculiarities of the one, the circumstances that would accompany the Other? There have been years in which those insects have excessively abounded, which are considered as ominous, but which however have neither produced war, nor famine, nor pestilence nos unusual mortality. These accidents may have occurred a long time afterwards, but could not therefore be the consequence of those pretended indications. Many people will forego nothing of their prejudices, but obstinately maintain that this effect flows from the cause they attribute it to; but how will they demonstrate the connection? How will they persuade us that those insects which appear in one country have been the forerunners of calamity in another? The world is a great theatre where the scene is perpetually occupied by similar tragedies \ so that no time perhaps

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