FARM DAIRYING 



rial of the universe in circulation. When meat, 

 milk, wood, etc., decay, it is largely the work of 

 bacteria reducing them to gases, and dust, that 

 these elements may again be built up into plants 

 and trees for the use of animals. If it were not 

 for bacteria, this world would soon become unin- 

 habitable. 



Bacteria have three general forms — spherical, 

 rod-shaped, and spiral. Their method of increas- 

 ing is simply by dividing, one germ becoming two. 

 This is the distinguishing mark which separates 







/<■ 



DIFFERENT TYPES OF BACTERIA 

 MAGNIFIED 1,000 TIMES 



bacteria from yeasts. The latter multiply by 

 budding — the buds breaking off and forming new 

 plants. 



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