This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1803. Excerpt: ... SECT. XII. OF STIMULUS, SENSORIAL EXERTION, AND FIBROUS CONTRACTION. I. Of sibrous contraction. I. Two particles of a sibre cannot approach ivithout the intervention of something, as in magnetism, electricity, elasticity. Spirit of lise is not electric ether. GnlvanPs. experiments. 2. Contraction of a sibre. 3. Relaxation succeeds. 4. Successive contractions, ivith intervals, Quick pulse front debility, from paucity of blood. Weak contractions performed in less time, and ivith shorter intervals. 5. Last situation of the sibres continues after contraction. 6. Contraction greater than usual induces pleasure or pain. 7. Mobility of the sibres unisorm. Quantity offensorial power stuctuates. Constitutes excitability. II. Of sensorial exertion. 1. Animal motion includes stimulus, sensorial power, and contractilesibres. The senforial saculties acl separately or conjointly. Stimulus offour kinds. Strength and weakness desined. Sensorial power perpetually exhausted and renewed. Weahness from desect of stimulus. From desect of sensorial power, the direct and indirect debility of Dr. Brown. Why we become warm inBuxton bath after a time, and fee well after a time in a darkish room. Fibres may act violently, or with their whole force, and yet feebly. Great exertion in inflammation explained. Great muscular force of some insane people. 2. Occasional accumulation ofsensorial power in muscles subject to constantstimulus. In animals steeping in winter. In eggs, seeds, seirrhous tumours, tendons, bones. 3. Great exertion introduces pleasure or pain. Instammation. Liberation of the system between torpor and activity. Fever-sits. 4. Desire and aversion introduced. Excess of volition cures fevers. III. Of repeated stimulus. 1. A stimulus repeated too frequently loses efsect. ...
