54 INDEPENDENT MOVEMENT IN BACTERIA. 



bacteria alone, but also extends to higher sessile fungi. If such 

 an attracting agent be brought sufficiently near to a culture of the 

 latter description, the growth and extension of the cell threads 

 on that side of the culture will show marked exuberance. This 

 attempt on the part of sessile fungi to turn towards a point of 

 chemical attraction is entitled Chemotropism. Its cause is iden- 

 tical with that of Chemotaxis ; the difference in the effect being 

 due to the difference of the object influenced. It may be men- 

 tioned that MIYOSHI (I.) has performed exhaustive experiments of 

 this kind. 



