IDS 



Plant Tissue Culture 



Fig. 58. Assembly of four manometers with their attached roots 

 :iik1 culture Husks, coupled by a manifold to a tank of compressed 

 nitrogen in stn-li a manner thai the force with which water is driven 

 into the capillaries by the Becretory activity of the roots can be 

 balanced against a known gas pressure and thus measured. ( From 

 White, P. B. 1942. Sigma Xi Quarterly 30: L32, fig. 13, SS4.) 



