There are men yet more profound, who have heard that two colourless liquors may produce a colour by union, and that two cold bodies will grow hot if they are mingled; they mingle them, and produce the effect expected, say it is strange, and mingle them again.

The Idlers that sport only with inanimate nature may claim some indulgence; if they are useless, they are still innocent:  but there are others, whom I know not how to mention without more emotion than my love of quiet willingly admits.  Among the inferior professors of medical knowledge, is a race of wretches, whose lives are only varied by varieties of cruelty; whose favourite amusement is to nail dogs to tables and open them alive; to try how long life may be continued in various degrees of mutilation, or with the excision or laceration of the vital parts; to examine whether burning irons are felt more acutely by the bone or tendon; and whether the more lasting agonies are produced by poison forced into the mouth, or injected into the veins.

It is not without reluctance that I offend the sensibility of the tender mind with images like these.  If such cruelties were not practised, it were to be desired that they should not be conceived; but, since they are published every day with ostentation, let me be allowed once to mention them, since I mention them with abhorrence.

Mead has invidiously remarked of Woodward, that he gathered shells and stones, and would pass for a philosopher.  With pretensions much less reasonable, the anatomical novice tears out the living bowels of an animal, and styles himself physician, prepares himself by familiar cruelty for that profession which he is to exercise upon the tender and the helpless, upon feeble bodies and broken minds, and by which he has opportunities to extend his arts of torture, and continue those experiments upon infancy and age, which he has hitherto tried upon cats and dogs.

What is alleged in defence of these hateful practices, every one knows; but the truth is, that by knives, fire, and poison, knowledge is not always sought, and is very seldom attained.  The experiments that have been tried, are tried again; he that burned an animal with irons yesterday, will be willing to amuse himself with burning another to-morrow.  I know not, that by living dissections any discovery has been made by which a single malady is more easily cured.  And if the knowledge of physiology has been somewhat increased, he surely buys knowledge dear, who learns the use of the lacteals at the expense of his humanity.  It is time that universal resentment should arise against these horrid operations, which tend to harden the heart, extinguish those sensations which give man confidence in man, and make the physician more dreadful than the gout or stone.

[1] Dr. Johnson gave this, among other mottos, to Mrs. Piozzi.  They will
    be inserted in this Edition in their proper places, and indicated by
    an asterisk.  See Mrs. Piozzi’s Anecdotes, and Chalmers’ British
    Essayists, vol. 33.