HOUSEHOLD BACTERIOLOGY 
No Germs 
l,'o Disease 
Favorable 
Conditions 
76 
eased tissues; by inhaled dust, as most often in tuber¬ 
culosis or consumption; or by food or drink in which 
was the germ which is capable of causing a specific 
disease—as typhoid fever, diphtheria, etc, or through 
some wound in the skin. bigs. 4°> 4B 4 2 * 
If the specific germ of typhoid fever, tuberculosis 
or pneumonia, etc., is not pres¬ 
ent the disease will not appear, 
no matter how “run down” or 
“below par” the person may be. 
But any condition short of nor¬ 
mal health—any weakening of 
the body by cold, indigestion, 
fatigue, overheating, lack of 
nourishment, etc., tends to lessen 
the resistance in some part or 
the whole of the body and makes 
the attack of any germ which 
comes along more surely suc¬ 
cessful. 
Any inherited weakness, as 
weak lungs, sluggish circulation, 
imperfect digestive powers, in¬ 
creases the danger or liability to 
attacks of germ diseases. Given the germ under fa¬ 
vorable conditions for its growth, it is then a question 
of the resistant power of the individual, aided, per¬ 
haps, by medical science, whether the body or the dis¬ 
ease will gain the victory. 
FIG. 
41 
Diphtheria. 
(After Conn.) 
Bacillus of 
