CHAPTER V 

 MICROBES HAVE LOCOMOTION 



MICEOBES have the power of motion. 

 they move with surprising sprightliness. In Fig. 9 

 are seen a number highly magnified in a drop of 

 water. The finer lines represent their movements. 

 They dart to and fro in all directions. They hit 

 one another, turn about, roll over uffarimg to 

 perform all sorts of antics. 



Their movements are produced by various means. 

 Probably in the great majority of cases they n. 

 by bodily vibrations. In Fig. 10 the body of the 

 microbe is elongated in the horizontal direction. 

 In Fig. 11 the body is elongated in the perpendicu- 

 lar direction. It is plain that by such oscillation, 

 first in one direction, then in the transverse direc- 

 tion, the microbe may be impelled in any desired 

 way. 



Sometimes the motions may be produced by ap- 

 pendages extemporized for the purpose. Fig. 12 

 represents the microbe without these appendages. 

 Fig. 13 represents the same microbe with them. 

 These appendages answer for legs. They we 

 simply minute protrusions of the speck of pro- 

 toplasm thrown out at will. They appear and dis- 

 appear at the pleasure of the owner. When needed, 



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