medical essays-第5节
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he lungs； from which he was suffering； and the disease； being unfortunately aggravated by the vehemence of their discussion； or the contents of the pipkin； carried him off in the course of a few days。 Berkeley himself afforded a remarkable illustration of a truth which has long been known to the members of one of the learned professions； namely； that no amount of talent； or of acquirements in other departments； can rescue from lamentable folly those who； without something of the requisite preparation； undertake to experiment with nostrums upon themselves and their neighbors。 The exalted character of Berkeley is thus drawn by Sir James Mackintosh： Ancient learning； exact science； polished society； modern literature； and the fine arts； contributed to adorn and enrich the mind of this accomplished man。 All his contemporaries agreed with the satirist in ascribing
〃'To Berkeley every virtue under heaven。'
〃Even the discerning； fastidious； and turbulent Atterbury said； after an interview with him； 'So much understanding； so much knowledge； so much innocence； and such humility； I did not think had been the portion of any but angels； till I saw this gentleman。'〃
But among the writings of this great and good man is an Essay of the most curious character； illustrating his weakness upon the point in question； and entitled； 〃Siris； a Chain of Philosophical Reflections and Inquiries concerning the Virtues of TAR WATER； and divers other Subjects；〃an essay which begins with a recipe for his favorite fluid； and slides by gentle gradations into an examination of the sublimest doctrines of Plato。 To show how far a man of honesty and benevolence； and with a mind of singular acuteness and depth； may be run away with by a favorite notion on a subject which his habits and education do not fit him to investigate； I shall give a short account of this Essay； merely stating that as all the supposed virtues of Tar Water； made public in successive editions of his treatise by so illustrious an author； have not saved it from neglect and disgrace； it may be fairly assumed that they were mainly imaginary。
The bishop； as is usual in such cases； speaks of himself as indispensably obliged； by the duty he owes to mankind； to make his experience public。 Now this was by no means evident； nor does it follow in general； that because a man has formed a favorable opinion of a person or a thing he has not the proper means of thoroughly understanding； he shall be bound to print it； and thus give currency to his impressions； which may be erroneous； and therefore injurious。 He would have done much better to have laid his impressions before some experienced physicians and surgeons； such as Dr。 Mead and Mr。 Cheselden； to have asked them to try his experiment over again； and have been guided by their answers。 But the good bishop got excited； he pleased himself with the thought that he had discovered a great panacea； and having once tasted the bewitching cup of self…quackery； like many before and since his time； he was so infatuated with the draught that he would insist on pouring it down the throats of his neighbors and all mankind。
The precious fluid was made by stirring a gallon of water with a quart of tar； leaving it forty…eight hours； and pouring off the clear water。 Such was the specific which the great metaphysician recommended for averting and curing all manner of diseases。 It was； if he might be believed； a preventive of the small…pox； and of great use in the course of the disease。 It was a cure for impurities of the blood； coughs； pleurisy； peripneumony； erysipelas； asthma； indigestion； carchexia； hysterics； dropsy； mortification； scurvy； and hypochondria。 It was of great use in gout and fevers； and was an excellent preservative of the teeth and gums； answered all the purpose of Elixir Proprietatis； Stoughton's drops； diet drinks； and mineral waters； was particularly to be recommended to sea…faring persons； ladies； and men of studious and sedentary lives； could never be taken too long； but； on the contrary； produced advantages which sometimes did not begin to show themselves for two or three months。
〃From my representing Tar Water as good for so many things；〃 says Berkeley； 〃some perhaps may conclude it is good for nothing。 But charity obligeth me to say what I know； and what I think； however it may be taken。 Men may censure and object as they please； but I appeal to time and experiment。 Effects misimputed； cases wrong told； circumstances overlooked； perhaps； too； prejudices and partialities against truth； may for a time prevail and keep her at the bottom of her well； from whence nevertheless she emergeth sooner or later； and strikes the eyes of all who do not keep them shut。〃 I cannot resist the temptation of illustrating the bishop's belief in the wonderful powers of his remedy； by a few sentences from different parts of his essay。 〃The hardness of stubbed vulgar constitutions renders them insensible of a thousand things that fret and gall those delicate people； who； as if their skin was peeled off； feel to the quick everything that touches them。 The tender nerves and low spirits of such poor creatures would be much relieved by the use of Tar Water； which might prolong and cheer their lives。〃 〃It ＇the Tar Water＇ may be made stronger for brute beasts； as horses； in whose disorders I have found it very useful。〃 〃 This same water will also give charitable relief to the ladies； who often want it more than the parish poor； being many of them never able to make a good meal； and sitting pale； puny； and forbidden； like ghosts； at their own table； victims of vapors and indigestion。〃 It does not appear among the virtues of Tar Water that 〃children cried for it；〃 as for some of our modern remedies； but the bishop says； 〃I have known children take it for above six months together with great benefit； and without any inconvenience； and after long and repeated experience I do esteem it a most excellent diet drink； fitted to all seasons and ages。〃 After mentioning its usefulness in febrile complaints； he says： 〃I have had all this confirmed by my own experience in the late sickly season of the year one thousand seven hundred and forty…one； having had twenty… five fevers in my own family cured by this medicinal water； drunk copiously。〃 And to finish these extracts with a most important suggestion for the improvement of the British nation： 〃It is much to be lamented that our Insulars who act and think so much for themselves； should yet； from grossness of air and diet； grow stupid or doat sooner than other people； who； by virtue of elastic air； water…drinking； and light food； preserve their faculties to extreme old age； an advantage which may perhaps be approached； if not equaled； even in these regions； by Tar Water； temperance； and early hours。〃
Berkeley died at the age of about seventy； he might have lived longer； but his fatal illness was so sudden that there was not time enough to stir up a quart of the panacea。 He was an illustrious man； but he held two very odd opinions； that tar water was everything； and that the whole material universe was nothing。
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Most of those present have at some time in their lives heard mention made of the METALLIC TRACTORS； invented by one Dr。 Perkins； an American； and formerly enjoying great repute for the cure of various diseases。 Many have seen or heard of a satirical poem； written by one of our own countrymen also； about forty years since； and called 〃Terrible Tractoration。〃 The Metallic Tractors are now so utterly abandoned that I have only by good fortune fallen upon a single one of a pair； to show for the sake of illustration。 For more than thirty years this great discovery； which was to banish at least half the evils which afflict humanity； has been sleeping undisturbed in the grave of oblivion。 Not a voice has； for this long period； been raised in its favor； its noble and learned patrons； its public institutions； its eloquent advocates； its brilliant promises are all covered with the dust of silent neglect； and of the generation which has sprung up since the period when it flourished； very few know anything of its history； and hardly even the title which in its palmy days it bore of PERKINISM。 Taking it as settled； then； as no one appears to answer for it； that Perkinism is entirely dead and gone； that both in public and private； officially and individually； its former adherents even allow it to be absolutely defunct； I select it for anatomical examination。 If this pretended discovery was made public； if it was long kept before the public； if it was addressed to the people of different countries； if it was formally investigated by scientific men； and systematically adopted by benevolent persons； who did everything in their power to diffuse the knowledge and practice of it； if various collateral motives； such as interest and vanity； were embarked in its cause； if； notwithstanding all these things； it gradually sickened and died； then the conclusion seems a fair one； that it did not deserve to live。 Contrasting its failure with its high pretensions； it is fair to call it an imposition； whether an expressly fraudulent contrivance or not； some might be ready to question。 Ever
