BACTERIOLOGY IN A NUTSHELL. 
QUESTIONS FOR REVIEW. 
I. —Who perfected the “single lens’’ and what 
were the first discoveries made by its perfector? 
In what year did he announce his discoveries? 
Are these the earliest discoveries of which we 
have any account ? 
II. —In what year were later discoveries an¬ 
nounced by this scientist? How were these dis¬ 
coveries made? To whom were the results of 
his researches presented? 
III. —What attempts were made to classify, 
separate and identify the germs discovered, and 
were they believed to be in any way connected 
with pathological changes in any particular part 
of the body ? 
IV. —Who was the first physician to ascribe to 
micro-organisms the power to produce the so- 
called infectious diseases? In what year was 
the announcement made? Was the theory ac¬ 
cepted ? 
V. —Who is said to have been the first to suc¬ 
cessfully demonstrate that the germs discovered 
in the seventeenth century could produce dis¬ 
eases ? 
VI. —Describe in detail one of the chief points 
of discussion during the years that elapsed be¬ 
tween the discoveries mentioned and their ac¬ 
ceptance as disease germs. Tell of the man who 
first threw a gleam of light on the vexed question, 
of the means used, of others who followed the 
same method of research, the results gained. 
VII. —Mention some of the errors of early stu¬ 
dents of bacteriology with regard to the germ 
theory of disease. To whom do some bacteriol- 
18 
