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CHAP. LXXIII. Of the Palsey.
THE noble Compage of the Brain being a systeme of numerous fine Fibrils, branched through the Cortex, Corpus callosum, Fornix, Cor∣pora striata, Nates, Testes, Medulla oblongata, (Cerebellum, and its Processes) and through the Medulla Spinalis as an elongation of the Brain.
These innumerable minute Fibrils of the Brain, Cerebellum, * 1.1 and Medulla Spinalis, being the constituent parts, are framed of many small Filaments, whose Interstices are receptive of the Animal Liquor and Spirits, by whose spirituous and elastick Particles, the Fibrils are rendred plump, tense, and fit to exert the acts of Sense and Motion, which are also imparted to the Nerves of the whole Body, as so many outlets of the Brain, and the conti∣nuation of its fibrous Compage, the first Origen and rudiment of all nervous Divarications, overspreading, and invigorating all the Apartiments of the Body, with their select Liquor, and their more refined Particles, giving Sen∣sation, motion, and nourishment.
The Faculties relating to the said Operations, are lessened, depraved, * 1.2 or abolished, by the errors of the Brain, as being a systeme of innumerable Fi∣brils, containing the nervous Liquor and its Spirits, giving vigor and tenseness to the fibrous frame of the Brain, and its appendices, which are chiefly hurt in reference to Sense and Motion, in Two disaffections, either as they are de∣praved by Convulsive motions, or when pain ariseth in point of Sense; * 1.3 or when the Functions of Sense and Motion are very much lessened, or abolish∣ed in a Palsey, causing an impotency in the Limbs, when the fibrous parts of the Brain, and Limbs, lose their vigor and tenseness.
A Palsey may admit this description, That it is a resolution, or relaxation of the fibrous Compage of the Body, proceeding from defect of a due tense∣ness of the nervous Filaments; whereupon the Faculties of Sense and Moti∣on cannot exert their due operations, in some, or all parts of the Body.
A resolution happens to the nervous parts, when the Succus Nervosus, * 1.4 and its spirituous Particles are denied an access to the fibrous parts of the Brain, Cerebellum, and Medulla Spinalis; or when the Animal Spirits losing their due volatil, or elastick parts, do not influence the Nerves with due Spirits, and Tenseness, especially when they are affected with high Narcotick steams, which despoil them of their laudable temper and tone.
The motive Faculty is impeded, or abolished, * 1.5 by reason the Origens of the Nerves, are obstructed in the Cortex, or their progress in other Processes of the Brain, Cerebellum, or Medulla Spinalis, or in the Trunks of the Nerves, and their diverse Plexes, and divarications.
The origination of the Nerves, * 1.6 may be obstructed by the grossness of the Succus Nervosus, as not being capable to be received into the beginning of the Interstices, relating to the nervous Filaments, constituting the body of the Nerves.
The grossness of the nervous Liquor may arise from a thick faeculent al∣buminous part of the Blood, the Materia substrata of the Succus Nervosus; * 1.7 or when the cortical Glands being not well disposed, as having too large ex∣travagant