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Page:New observations on inoculation - Angelo Gatti.djvu/23

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On Preparation

PREPARING a subject for inoculation is endeavouring to give him such dispositions, as it is thought will fit him to go through the small-pox, with as little prejudice to his health as possible.

These dispositions, thus intended to be procured, are understood to be relative to the small-pox, and so peculiar to that disorder, as not to be preparatory to any other.

The preparation, by which these particular dispositions are to be procured, should therefore be particularly adapted to the disorder which is expected. It ought to be founded upon some known analogy between certain dispositions of the animal œconomy and the effects of the variolous virus upon the said œconomy; or at least upon an experimental knowledge, that such or such dispositions are always productive of a slight and mild small-pox.

It follows from this explanation, that, in order to prepare for inoculation with any degree of certainty, we should be acquainted with some dispositions in the animal œconomy distinct from a general state of health, and particularly relative to the small-pox; such as, on the supposition of two subjects enjoying an equal share of health, and every circumstance being in other respects the same in both, he who has those