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 

 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. 



