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THE NATURE-STUDY REVIEW [i. 2, march, 1905 



with Sachs' solution from experiments made several years before 

 in a university laboratory ; but it took time for the suggestion to 

 arise that the solution could be used aside from technical experi- 



Fig 3. Oats in a lamp-chimney " struggle for existence." Wrap a roll of cotton in black cloth, 

 push it into the chimney, and then with a stick or wire poke seeds in between glass and cloth. Dur- 

 ing germination keep moist with water, and afterwards with the solution. 



Hairy vetch on cloth netting stretched over the mouth of the tumbler, the roots hanging down 

 into the solution. Many other common plants grow well in same position. 



merits, and by the young folks as a common plant food. But one 

 day light came. I ordered some of the mixture in bulk, put up 

 loose in two-ounce packages. Later, as I saw a physician leave 

 tablets for a patient and heard him refer to the convenience of 



