7% Of the primary Seat AFTER the peftilential Poifon is thus received by the Spirits, it is impofiible to e^prefs the fatal Confequences, and the cruel Havock that is made in the whole O Economy •, for the lame Inftruments which before were aery, lucid, and like the Rays of the Sun, immediately become vapid, dark, and ufelefs, neither able to invigorate the Constitution, nor defend it againft the Contagion. THIRD LT, Having briefly pa.(Ted over thefe Matters, it remains that we fhew by what Step?: the humane Frame comes to be difordered by this peftilentiai Invaflon*, and in Order to this, I know not a more fatal Circumfrance in Nature, than to have the very Guards and tutelary Prefervers of Life turn, as it were, Deierters and Be- trayers. For there is nothing more mani- fest, than that the whole Compage, and its feveral Parts, run into Decay as foon as the peftilential Taint takes Place ^ for immediately upon the firfl Seizure, the whole Effort of Nature, as at Rome when Hannibal was at their Gates, is recollected againfc the Enemy, as fenfible that all is at Stake., but being unequal to the Conflict, they
