It is this. Young people born with a weak constitution, have, on a parity of crimes, much worse consequences to fear, than those who are naturally vigorous. None escape punishment, but all do not experience it equally severe. Those especially who have reason to apprehend any hereditary diseases by the father’s or the mother’s side; such as are threatened with the gout, the stone, the consumption, the king’s evil; those who have any touches of a cough, of an asthma, of spitting of blood, of head-achs, of the epilepsy; those who have any tendency to that kind of rickets which I have precedently mentioned; all these unfortunates, I say, ought to be intimately persuaded, that every act of this sort of debauchery gives a severe blow to his constitution, most certainly hastens the attack of the evils they dread, renders the fits infinitely more vexatious, and will throw them, in the flower of their youth, into all the infirmities of the most languishing old age. _Tartareas vivum constat inire vias._ ARTICLE II. _The CAUSES._ SECTION VI. _Importance of the seminal liquid._ How comes it that an over-abundant emission of seed produces all the evils I have precedently described? This is what I am actually proceeding to examine. These causes may be reduced to two, to wit, The privation of that liquid. The circumstances accompanying the emission. An anatomical particularisation of the organs of this secretion; the conjectures, more or less probable, on the process of nature in that secretion; with observations on its sensible qualities, would be so many points of discussion misplaced here. To prove the utility of that liquid to the human constitution, is all that is essential to the purposes of this work; and this is to be done by the testimonies of the most eminent physicians, including withal a determination of its effects on the body. The following Section will be appropriated to an examination of the effects which are produced by the circumstances that accompany the emission. It was the opinion of HIPPOCRATES, that the seed was a secretion from the whole body, but especially from the head. “The human seed (says he) proceeds from all the humors of the body, and is the most essential part of them. This is proved by the weakness, the faintness, which accompanies the loss of it in the act of coition, be the quantity never so small. There are veins and nerves, which, from all the parts in the body, concur to their centre in the parts of generation; when these are turgid, and genially heated, there is felt in them a stimulation, or pruriency, which communicating itself to the whole body, carries with it an impression of pleasure and glowing warmth; the humors enter into a kind of fermentation, which separates from them all that is the most precious and balsamic in them; and this part separated from the rest, is carried, by means of the spinal marrow, to the organs of generation[54].”