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Show JlIorbid anatomy qffever. handling it rather roughly or applying pretty . acrid irritants. the brain itself has sometimes shewn a yellow How much we may eXpect from closer examin= ation of the nerves in fatal cases of fever these facts may also serve to shew: When a nerve following dissection, which also tends to prove that the effects of pre-existing disease, when they do not (as sometimes they do not) mani- fest themselves outwardly or by symptoms, may be easily mistaken for the effects of fever. In "-3 1 in its ordinary state is put into nitrous acid at. the specific gravity of 1127, it assumes an agreeable light yellow hue. Dr. Reil (dc 5mm» 79 colour after. disease; as, for instance, in the the hospital at Ville Franche a girl died of tum nervorum, 1796, p. 520) on treating in this putrid fever, under the care of Dr. Gontard, manner portions of nerve taken from a person that died of typhus with violent nervous symptoms, observed that they became of a dirty dark colour (srn‘t/ido-fusczts), for the blood the physician. had penetrated to the inmost medulla, th€ vessels having been so dilated as to allow of great accumulation of blood in the coats of the nerves-In a nerve, left to inflame un- der ligature for several days, and carefully sea parated from the blood-vessels of its coats» strong nitrous acid, diluted with an equal quantity of water, will produce a deeper yellow tinge than in the corresponding piece of sound nerve. The inflamed Specimen will give out sensibly more air-bubbles in the same acid liquor; and in asolution of caustic alkali, it will shew the denticulated structure sooner and more distinctly ;--appearing at the same time less white. These dispositions extend some way from the injured Spot, and further upwards than downwards. It may not be amiss to add that the A cyst of the size ofa pigeon's egg was found in the right hemisphere of the brain, of which organ the substance was ofa yel- low colour and soft, though not fluid. Contiguous to the diseased part of the brain, there was caries of the temporal bone; and a way was traced, by which pus issued out of the right car, as it did long before the attack of fever, (Vandermonde, iv. 132..) It is needless to point out to the pathologist the application of such facts. The darker colour of the nerve with the adhering blood-vessels, or the yellower colour of the cleansed medulla, will probably be found frequent in fevers, in the phlegmasiae, in some of the neuroses, in dropsy and other com- plaints. And when no striking disorganization ofa part occurs to account for death, it may possibly arise from moderate but irrecoverable vascular distension or slighter inflammation along sortie considerable tract of nerve; the greater |