1908] DACHNOWSKI—TOXIC PROPERTY OF BOGS 139 
margins; responses which cannot be attributed to light but to a 
reduced transpiration current (18) consequent upon the toxicity of 
the habitat (figs. 1-6). 
It is worthy of note in this connection that when grown in a 0.01 
Ee oe Se plants from the various cultures of bog water and bog soil. 
5 as In the text, p. 133. Four plants from each solution. 
Per cent. solution of strychnin sulfate, atropin sulfate, or other 
xe body of a similar nature and with a high reducing power, the 
—e dwarfing effects are obtained with-Phaseolus. When treated 
with CaCO, and carbon black the solutions become highly beneficial. 
The accelerated growth and transpiration are no doubt due to the 
