Excerpt from Second Year College Chemistry a Manual of Laboratory Exercises
The work outlined in this manual is intended to accompany the author's text, "Second Year College Chemistry." It may, according to the authors experience, be used in connection with a course in quantitative analysis. The general order of procedure in both classroom and laboratory has been outlined in the preface to the text.
All the experiments here presented have been carefully tested out with several classes of students and then carefully rewritten. The author feels, therefore, that careful following of directions will insure good results. In all work of a quantitative nature, however, neatness and natural aptitude are prime factors which cannot be forced upon the student. The student who is naturally sloppy and clumsy will probably emerge from any course with his original traits, and will never measure up as a real chemist. However, neatness and skill on the part of the teacher are also necessary, for even a good student may be ruined by lax supervision and a careless example.
The apparatus employed in the experiments is made as simple as possible. This has been done for two reasons: first, the author desires to make it possible to work through this entire manual in places where the cost of more elaborate apparatus would be prohibitive; and second, he desires to emphasize principles rather than the bewildering details of refined methods and instruments. On the other hand, the aim has been constantly kept in mind to make the work accurate and truly quantitative. Careful directions have been included for the preparation of all the apparatus, although this preparatory work need not always, be done by the student where the time is limited.
One of the most important parts of successful laboratory work is the careful keeping of a notebook. The teacher is, therefore, urged to insist that neat, accurate notes accompany each experiment. These notes should be taken in the permanent notebook and in their final form, as soon as the data are obtained. The habit of writing notes on scraps of paper and afterwards copying them off in "better form" is pernicious. Proper entry of notes should be regarded as part of every experiment, not a separate exercise.
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