The Edinburgh new dispensatory : Containing I. The elements of pharmaceutical chemistry. II. The materia medica; or, The natural, pharmaceutical and medical history, of the substances employed in medicine. III. The pharmaceutical preparations and compositions. Including translations of the latest editions of the London, Edinburgh, and Dublin pharmacopoeias / by Andrew Duncan.

  • Duncan Andrew, 1773-1832.
Date:
1813
Catalogue details

Licence: Public Domain Mark

Credit: The Edinburgh new dispensatory : Containing I. The elements of pharmaceutical chemistry. II. The materia medica; or, The natural, pharmaceutical and medical history, of the substances employed in medicine. III. The pharmaceutical preparations and compositions. Including translations of the latest editions of the London, Edinburgh, and Dublin pharmacopoeias / by Andrew Duncan. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    77. The phenomena of electricity arise a. from the actual motion of the fluid from a body con- taining more, into another body containing less of it; l. from its attraction or repulsion, independently of any transference of fluid. 78. By rubbing electrics on each other, the distribution of the electric fluid in them is altered. On separating them, the one contains more, and the other less, than the natural quan- tity ; or, the one becomes positively, and the other negatively electrified. Positive electricity is also called vitreous, and ne- gative also resinous. 79. Electrics may also be excited by rubbing them with non-electrics. 80. If a body B bo brought into the neighbourhood of an electrified body A, B becomes electrified by position. 81. If a body B be insulated, that is, in contact with elec- trics only, when brought into the neighbourhood of an elec- trified body A, B becomes permanently electrified, and the electricity of A is diminished, while a spark passes between them accompanied by sound. If a metallic point be present- ed to a body negatively electrified, it emits rays of light; if to a body positively electrified, it becomes simply luminous. S2. When a body A has imparted electricity to another body B, they repel each other, unless B shall have afterwards im- parted all its electricity to other bodies. 83. Bodies repel each other, when both are positively or both negatively electrified. 84?. Bodies attract each other, when the one is positively and the other negatively electrified. 85. If either of the bodies be in the natural state, they will neither attract nor repel each other. 86. The electric spark is accompanied by intense increase of temperature, and will kindle inflammable bodies. 87. Electricity is disengaged during many chemical actions, and it produces very remarkable chemical effects, depending chiefly on sudden and momentary increase of temperature, and on the light produced. 88. Electricity acts on the living system as a stimulus. GALVANISM. 89. The phenomena of galvanism seems to depend solely on the agency of electricity, excited during certain chemical ac- tions.