This being the state of the case, the road to Longevity was plain; nothing more being required, says his lordship, but to repair the waste committed by the internal spirit, by making the substance of it more thick and dense, by a regular course of opiates on one side, and by refrigerating the heat of it on the other, by three grains and a half of salt-petre every morning before you got up.----

This being the case, the road to Longevity was plain; nothing more being required, (says his lordship), but to repair the waste committed by the internal spirit, by making it more thick and dense with a regular course of opiates, and also by cooling its heat with three grains and a half of salt-petre every morning before you got up.
