In this cellular Membrane the extravasated Waters of hydropic Patients are commonly diffused; and here they give Way to that Motion, to which their own Weight disposes them. But here I may be asked--As this Membrane is crossed and intersected in different Parts of it, by Nerves, Veins, Arteries, _&c._ the wounding of which unavoidably occasions grievous Symptoms, how comes it, that such do not ensue upon the Intrusion of such noxious Substances? To this I answer, 1, that such Symptoms do sometimes really ensue; and 2, that nevertheless they must happen but seldom, by Reason that all the aforesaid Parts, which traverse and intersect this Membrane, being harder than the Fat it contains; such foreign Substances must almost necessarily, whenever they rencounter those Parts, be turned aside towards the Fat which surrounds them, whose Resistance is very considerably less; and this the more certainly so, as these Nerves, _&c._ are always of a cylindrical Form.----But to return from this necessary Digression. Sec. 428. To all these Methods and Expedients I have already recommended on the important Subject of this Chapter, I shall further add some general Directions. 1. It is often useful, and even necessary, to take a considerable Quantity of Blood from the Arm; but especially if the Patient's Respiration, or Breathing, is extremely oppressed; or when we cannot speedily succeed in our Efforts to remove the obstructing Substance; as the Bleeding is adapted to prevent the Inflammation, which the frequent Irritations from such Substances occasion; and as by its disposing the whole Body into a State of Relaxation, it might possibly procure an immediate Discharge of the offending Substance. 2. Whenever it is manifest that all Endeavours, either to extract, or to push down the Substance stopt in the Passage, are ineffectual, they should be discontinued; because the Inflammation occasioned by persisting in them, would be as dangerous as the Obstruction itself; as there have been Instances of People's dying in Consequence of the Inflammation; notwithstanding the Body, which caused the Obstruction, had been entirely removed. 3. While the Means already advised are making Use of, the Patient should often swallow, or if he cannot, he should frequently receive by Injection through a crooked Tube or Pipe, that may reach lower down than the _Glottis_, some very emollient Liquor, as warm Water, either alone or mixed with Milk, or a Decoction of Barley, of Mallows, or of Bran. A two-fold Advantage may arise from this; the first is, that these softening Liquors smooth and sooth the irritated Parts; and secondly, an Injection, strongly thrown in, has often been more successful in loosening the obstructing Body, than all Attempts with Instruments.