LABORATORY LESSONS IN GENERAL 

 SCIENCE 



I. LESSONS ON THE HUMAN BODY 



To THE PUPIL. In the lessons that follow much useful information 

 may be learned about many things with which we are already more or 

 less acquainted. Wherever it is possible we shall study these things 

 directly, and try to answer important questions about them. To the 

 information gained in this way we shall in many cases add the knowl- 

 edge gained from books. From these observations, from experiments, 

 and from books, we are to get all the information we can. Every ques- 

 tion asked and every requirement made is of the nature of a problem 

 for us to solve. We are expected to find a reasonable answer for it. 

 Sometimes we shall want to know not only that a certain thing is true, 

 but why it is true, and what difference it would make to us if it were 

 not true. That means that we must not only learn the facts, but we 

 must consider what they mean. The questions asked will guide us in 

 doing this. Doubtless many other questions will occur to you whose 

 answers you will want to know. Consult freely all books at hand 

 likely to give the information you want. 



THE HAND 



I. 1 Which part of the arm as a whole is the hand ? What 

 name is given the part where the hand joins the forearm ? 



2. After moving the fingers in all possible directions, state 

 what is true (a) of the freedom and variety in their move- 

 ments; (6) of the number of muscles required for these 

 movements. 



1 In these laboratory exercises the paragraph numbering is to be observed 

 in the written work handed in. This will aid in the correction of the papers. 

 B 1 



