1907] 



OSTERHOUT BALANCED SOLUTIONS 



269 



A similar though less extensive series of experiments was carried 

 out with flax, alfalfa, red-beet, and radish seeds. Another series 

 was made by placing 

 pieces of the fresh- 

 water aquatics, 

 Zannichellia and 

 Potamogeton, in 

 solutions, or in the 

 case of Lemna, by 

 allowing the plants 

 to float on the sur- 

 face. The results 

 in all these cases 

 were similar to those 

 given above. 



It is thought 

 desirable to see how 

 cuttings would 

 behave under simi- 

 lar treatment. Cut- 

 tings (about nine 



inches in length) of Tradescantia and Tropaeolum were placed 

 upright in bottles, the lower three inches of the plant being submerged 



TABLE VIII. CUTTINGS 



All quantities given are cubic centimeters of 3^/32 solutions. 



FIG. 6. Growth of roots of wheat in various 3^/25 

 solutions. Quantities are stated in cubic centimeters, 

 and the aggregate length of roots in millimeters. I, NaCl 

 1000 + KC1 22 + CaCl 2 10, length 324. 2, NaCl 1000 

 + CaCl 2 10, length 254. 3, CaCl 2 , length 70. 4, NaCl, 

 length 59. 



GROWTH IN 10 DAYS 



