Bacteriology in a nutshell. 
micro-organism is not found all through the pro¬ 
cess the suspected disease does not exist. 
SUMMARY OF CHAPTER IV. 
Parkes’ list of diseases due to bacterial inva¬ 
sion. How they are communicable. 
Authorities have different opinions on this 
point. 
Manner in which bacteria gain an entrance to 
the human structure. 
The periods of incubation, invasion and devel¬ 
opment of disease if the bacteria are not over¬ 
come by the phagocytes. 
How infection is thrown off from the healthy 
body. 
Death of bacteria through lack of nourishment 
and other causes. 
Immunity: Natural, acquired, artificial and 
definitions. 
Antitoxins: Where they are obtained and how 
they are prepared. 
Koch’s Circuit. 
QUESTIONS FOR REVIEW.-CHAPTER IV. 
I. —How are diseases designated in the classes 
mentioned ? 
II. —Define inoculation. Surface lesion. Air¬ 
borne. 
III. —Mention channels through which infec¬ 
tion is communicated to the body. 
40 
