S. A. D. Tissot, Advice to the people in general…
“ Notwithstanding our Cautions on this important Head, whenever an urgent Necessity commands it, Purging must be recurred to at all Times and Seasons: but when the Season may be safely selected, it were right to decline Purging in the Extremities of either Heat or Cold; and to take the Purge early in the Morning, that the Medicines may find less Obstruction or Embarrassment from the Contents of the Stomach. Every other Consideration, with Relation to the Stars and the Moon, is ridiculous, and void of any Foundation. The People are particularly averse to purging in the Dog-days ”
