Percentage change of weight. 
6o D. T ho day. 
withdrawal of water. Those given in Fig. 1 are essentially similar 
to Stiles and Jorgensen’s curves for the same substance ( l.c ., p. 425, 
Fig. 7). 
Fig. 1 , Cane sugar. 
They indicate that the pieces of tissue were initially in a 
condition of turgescence such that they would have been in 
equilibrium 1 with a solution rather stronger than M/5. The curve 
1 Stiles and Jorgensen describe such an equilibrium by saying that “ the 
solution was approximately isotonic on the osmotic hypothesis with the cell 
sap.” (“ Studies m Permeability V,” p. 425 ; also p. 426). This statement is 
misleading and is founded on a prevalent misconception which will be discussed 
in a subsequent paper. 
