2. The Stimuli of EXTERNAL OBJECTS is excluded by the Silence and Darkness of 3. Even CATHARTICS lofe their Power of While ATMOSPHERIC AIR is almost the only external Power, which then continues to be applied, at once carrying off what is excrementitious from the Lungs, as it af- fords probably to the Syftem THAT PRIN- And as COLD accumulates the Irritability of the Fibre, it is wifely fore-ordained that ib. fIt follows, therefore, that if the Exertion of {NUTRITION is probably carried on during Sleep, The Reason why SWEATS are fo likely to PAGE 443 444 ib. SECT. XLI. SOME PRACTICAL OBSERVATIONS. The Reason why we ought to go to Bed The End of SLEEP is to regain that Irritabi- The Chamber in which we fleep ought there 445 ib. We fhould not fleep furrounded with Cur- 1. Because the OXYGEN or VITAL AIR, imbibed by the Lungs, if not THE PRINCIPLE, favours at least the Reco- And 2. Becaufe IT makes up part of the di- Snoring arifes from impure AIR in the Cham- The Poor exhausted by their Labour go to Bed early, get up at Sun-rise, and accumu- late fresh IRRITABILITY by the Coolness of The blooming Complexion of the Peasanty com- pared with the fickly Vifage of the Sons of Luxury, who turn Night into Day, and fleep in Beds of Down, clearly demonstrates which Mode of Life is moft conducive to HEALTH, - ib. ib. ib. Thofe, who fit up at Night, and fleep late in [Study protracted far into the Hours of Night, Cares harboured, and even very late Hours in COMPANY, by encroaching on the Hours adapted for Sleep, are fure to lay the {King HENRY's Soliloquy, It is thought by the Greek Poet unnatural for a King to enjoy a whole Night's reft, ib. Lord LYTTELTON's Death afcribed to a Want {The Character of this Nobleman, The Studious ought to limit their learned As Sleep arifes from the Exhauftion of the IR- RITABLE PRINCIPLE, it is procured, ib. 451 ib. 3. By Sounds, which divert the Mind from Volition, PAGE 452 And 4. By the Abftraction in part of the Stimulus of Oxygen from the Air, ib. A Note to fhew that the new Chemistry has not introduced idle and ridiculous Speculations, An Enumeration of the Physicians, and other Gentlemen of literary Education, who have united in favour of the factitious Airs, and other Substances, of which the Application to Medicine has been suggested by modern philofophical Difcoveries, 453 ib. Dr. CRAWFORD, the celebrated Author of a Work on animal Heat, is a new Acceffion of Strength, ib. He became a Patient to Dr. THORNTON, and inhaled the ib. {The Effects which this Air had on Dr. CRAWFORD, ib. The Experience of Dr. BEDDOES, in which he is able to induce Sleep almost at will by means of the Hydrocarbonate, The ANALOGY which there is between Sleep, and the State of Torpor in dormant Animals, {Cold Cold puts all Animals of this Class to fleep, except the MARMOT, THIS ANIMAL clofes up the Aperture of his fubterraneous Dwelling, and then it becomes torpid, 7 ib. 454 455 ib. Though |