340 APPENDIX 



Wheat 



4 ten-pound samples of different lots of wheat. 

 A bundle of wheat heads 

 1 bushel of uncleaned wheat. 

 2 pints milk, different samples. 

 1 plant, geranium to use for cuttings. 

 1 bushel sand for germination. 

 Soil. Three bushels each of the following kinds of air-dry soil : 



gravel, sand, loam, and clay. 

 1 tube rack for holding capillary soil tubes. 

 18 inches rubber tubing, \ inch inside diameter. 



