Excerpt from Inorganic Chemistry
This volume is the outcome of an attempt to provide a chemistry course for a class of boys of whom some had been promoted from a lower science set, and the rest had come over from the classical side. The course had therefore to be both a revision and an introduction.
In preparing the course an endeavour was made to follow the strictly logical method; hence no compound of unknown composition could be employed for chemical purposes except with the object of determining its composition. Acids, for instance, could not be used to supply hydrogen, nor potassium chlorate to supply oxygen. This imposed a somewhat unusual order and the introduction of some discussions not generally included in an elementary course. It demanded also the postponement of the convenient methods of preparing gases. Although at first sight these restrictions may appear fatal to efficiency, I found them in the event altogether advantageous. As soon as the student has obtained a little of a given substance and has recognised it by its properties, it is both quicker and less wasteful to supply him with sufficient for his experiments. Take, for instance, sulphur dioxide.
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