14 Gee, Daltoiis Lectures and Lecture Illustrations. 



Led. 4. GALVANISM. Discovery of Galvanism in 

 1 79 1 — a very distinct branch of electricity. Experiments 

 with silver and zinc. Perfect and imperfect conductors — 

 simple galvanic train — a number of these connected 

 constitute a battery. Galvanic trough. Galvanic charge 

 supposed to differ from an electric as a low charge of 

 an electric battery differs from a high charge of a jar — 

 hence the little importance of insulation. Tin end of 

 trough positive — copper end negative. Galvanic shock — 

 acid and alkaline tastes by positive and negative wires. 

 Decomposition of water, alcohol, &c. by galvanism. 

 Medical application. Theory of the battery — number and 

 magnitude of plates, &c " 



The financial result was again satisfactory. £74. 

 15s. od. was paid by the subscribers, the chief items of 

 expenditure were advertising, printing the syllabus and 

 hire of lecture room, the total being £12. 6s. od. 



1823. 



Lectures at Leeds Philosophical and Literary Society. 

 He gave six lectures, four being on Mechanics and two 

 on Meteorology. He was paid 50 guineas. In his memo- 

 randa of expenses amounting to i^io. 8s. od. there is a 

 bill for three weeks' board and lodging for £4. 6s. od. 



1824. 



This year commences Dalton's association with the 

 Medical School, when Thomas Turner proposed to estab- 

 lish a School of Medicine and Surgery. The project 

 being well received, Turner took a house in Pine Street, 

 a small street between George Street and Falkner Street. 

 Dalton joined the staff of ' seven, taking Pharmaceutical 

 Chemistry as his subject." 



''• See " Sketches of the Lives and Work of the Honorary .Medical Staff 

 of the .Manchester Infirmary." By E. M. Brockbank. 1904. Manchester: 

 at the University Press. 



