PREFACE 
This text has been prepared for the purpose of fur- 
nishing the pupil with the essential facts about tools 
and their uses. However efficient the instruction may 
be and however attentive the pupil, it is impossible for 
him to fully grasp and comprehend during a demonstra- 
tion the names of tools and technical terms, most of 
which are new to him. This applies with equal force 
to the manner of using the tools and to the methods of 
working. 
The function of the text is to supplement the instruc- 
tion of the teacher. It is intended to gather up and 
arrange in a logical order the facts which the pupil 
has already been told. By this means these facts will 
become fixed in the mind of the pupil and he will work 
with a better understanding and make greater progress. 
It is believed that the text can be used to the great- 
est advantage by requiring the pupil to read up the sub- 
jects presented in class immediately after the close of the 
lesson. Frequent rapid reviews and occasional written 
tests are very effective. 
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