“THE CHEMISTRY OF COMMON THINGS”
Will be given in the Old Free Library
By Julius B. Cohen, Esq., Ph.D., F.C.S.
Lecturer in Chemistry at the Yorkshire College, Leeds.
Commencing on Tuesday, January 23, 1894
Doors open at 7.0 p.m. Lecture at 7.30
PROGRAMME
| Jan 23 | I | Air | Evidence of air – Pressure of the atmosphere – Composition of air – Properties of Oxygen and Nitrogen shown by Experiment – Source of Carbonic acid and moisture – Effects of bad ventilation. |
| Jan 30 | II | Water | Distribution on the Earth – Solvent action – Cause of Hard and Soft Water – Boiler Crust – Method of Softening – Purification – Tests of Purity – Experimental proof of Composition. |
| Feb 6 | III | Coal | Formation from Vegetable Matter – Vegetation sustained by Sun’s Light and Heat – Chemical Changes to action of Light – Photography – Explanation of term Energy – Experiments illustrating transformations of Energy. |
| Feb 13 | IV | Coal | Constituents – Carbon – Diamond, Black-lead and Charcole – Burning of Coal – Meaning of Burning – Respiration and Rusting – Coal Products, Gas, Ammonia and Tar |
| Feb 20 | V | Soap and Candles | Animal Fat and Oil – What they consist of – Manufacture of Soap – Effect of Hard Water on Soap – The Tallow Candle – The Stearine and Wax Candle – The Chemistry of a Burning Candle. |
| Feb 27 | VI | Matches | Their History – The Tinder-box and Lucifer Match – Manufacture of Matches – The Safety Match – Chemical changes produced in striking a light – Flame – The Miner’s Lamp. |
| Mar 6 | VII | Brimstone and Salt | Sulphur – Its source and purification – Sulphurous and Sulphuric Acids – Uses of Oil of Vitriol – Sources of Salt – Composition – Uses of Chlorine – Spirits of Salts – Chloride of Lime. |
| Mar 13 | VIII | Beer and Bread | Constituents of Grain – Malting – The Yeast Plant; Its life history – Fermentation by Yeast – Manufacture of Alcohol, Wine, and Bread – Other kinds of Fermentation – Sour Milk – Vinegar. |
ADMISSION: – FRONT SEATS, 6d. ; SECOND SEATS, 3d.
Tickets for the Course, 3/- and 1/6.
Special arrangements for Schools
Course Tickets may be obtained from Mr. Bisat, and Mr. Robinson, Booksellers; or from the Honorary
Secretary, Mr. Stiles, French-gate, who will furnish any information.