Excerpt from Ontario High School Laboratory Manual in Chemistry
As this Manual is intended for use in secondary schools of all grades, it has been thought best to leave to individual teachers the selection of the experiments which the class shall be required to do and those which the teacher himself will use for demonstration purposes. The equipment of the schools, the experience of the teachers, and the exigencies of the time-table, are so variable that it seems unwise to prescribe a division which, suitable in some cases, would be quite unsatisfactory in others. Most of the experiments should always be done by the pupils, some may be done by either pupils or teacher, and a few probably would, for various reasons, be better performed by the teacher. These last have been retained in the Text-book, the others are in the Manual.
According to the general practice of the best authors and teachers, questions have been appended to the experiments to fix the learner's attention on the problem to be determined, otherwise confusion of mind is certain to arise through the heed of non-essentials.
As this book is likely to be used by many teachers who have not had experience in working through a systematic course of experiments, the following suggestions are offered in the hope that they make the work easier for such teachers and more profitable for the learners.
(1) Use small quantities of materials, unless when otherwise stated.
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