BACTERIOLOGY IN A NUTSHELL. 
Difference in size of the saprophytic and para¬ 
sitic families. 
What we understand by the term pathogenic 
bacteria. 
Saprophytic bacteria and the benefits derived 
from them by the animal and the vegetable king¬ 
doms. 
QUESTIONS FOR REVIEW.—CHAPTER II. 
I. —How has the perfecting of the microscope 
been of benefit to mankind in a special way ? 
II. —Give in detail some of the mysteries with 
regard to the human structure as revealed by the 
microscope since its perfection. 
III. —Are the different systems of the body 
in any sense independent systems? Give one 
reason why they are not entirely independent. 
IV. —Mention the functions of the groups 
of cells spoken of in this chapter. 
V. —Explain what you understand by the term 
“disease” and give the cause of one serious form 
of disease. 
VI. —Into how many classes may bacteria be 
divided in order to simplify for study? 
VII. —Define bacteria, pathogenic bacteria, sap¬ 
rophytic bacteria. 
VIII. —Prove that pathogenic bacteria are foes 
to health. 
IX. —In what way do saprophytes benefit man¬ 
kind ? 
X. —Explain what would happen to plant and 
vegetable and animal life if saprophytic bacteria 
should be destroyed or become inactive? Give 
reasons for your answer? 
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