BACTERIOLOGY IN A NUTSHELL. 
Resistive 
Power of 
Spores. 
spores to resist heat and drying is found to be 
almost incredible. Bacteriologists assert that 
some forms of spores live on after they have 
been exposed for a brief period to a temperature 
of 360° F. Other forms have been treated to a 
bath of boiling water for a longer period, and yet 
both have come through these processes alive and 
have again germinated. 
While the parent bacillus, as a rule, is sup¬ 
posed to die during spore formation, because the 
spores use up the protoplasm of the parent for 
their own sustenance, this is believed not to be 
true in every instance. The functions of the 
parent cell are said sometimes to go on in the 
usual way during the process of spore-formation, 
sufficient of its protoplasm being retained to sus¬ 
tain life and again to renew its activities after the 
spores have broken through its walls. 
SUMMARY OF CHAPTER III. 
Classification with regard to shape, outline, etc. 
Definitions of various names descriptive of bac¬ 
teria. 
Methods of grouping as seen in growing cul¬ 
tures. 
Terms used to designate methods of grouping. 
Bacteria which form spores and those which 
do not. 
Development of bacteria dependent upon cer¬ 
tain conditions. 
Why it is difficult to determine dimensions of 
bacteria. 
Discovery of Weigert. 
Power of phagocytes. 
32 
