BACTERIOLOGY IN A NUTSHELL. 
Sterile Water—process of sterilization. Dis¬ 
tilled water. Filtered water not used without 
sterilizing in aseptic surgery. 
QUESTIONS FOR REVIEW. 
I. —Is carbolic acid a complete germicide? In 
what class of diseases is it safest to employ other 
disinfectants rather than carbolic acid? 
State accurately how to prepare a carbolic acid 
solution suitable for use in surgical practice. 
II. —Why is bichloride of mercury unsafe to 
use for disinfecting excreta? Surgical instru¬ 
ments? Haw would you prepare one pint of bi¬ 
chloride of mercury solution 1-4000 from a solu¬ 
tion 1-1000 as a base? 
III. —What can you say of the efficiency of 
peroxide of hydrogen ? What precautions should 
be taken to prevent its becoming inert? 
IV. —What can you say of the value of lime 
as a disinfectant? Iiow would you prepare it for 
use? 
V. —Name several points in favor of the use 
of lysol as an antiseptic. Also mention one or 
two disadvantages of potassium permanganate. 
VI. —In what ways does the use of normal salt 
solution benefit the patient when used during or 
after operation? 
VII. —What advantage has formalin solution 
over bichloride ..of mercury for disinfecting ex¬ 
creta? 
VIII. —Why is the free use of boracic acid 
safe? 
IX. —Flow is the “American Standard” solu¬ 
tion prepared? Also “Thiersch's Solution?” 
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