208 X. 11. EXPEKIMKNT STATION [Bulk'tiu 14S 



Expenses of Tests and Analyses: 



As no funds are available for the Secretary of the State Board 

 or for the Experiment Station to conduct the tests, a nominal 

 charge, sufficient to cover the cost of making them, must be 

 made. The charge for making a purity test will be seventy-five cents 

 per sample. For seeds sold in mixtures the charge will be sev- 

 enty-five cents for the sample and ten cents additional for each 

 kind of seed said to be contained therein. The charge for mak- 

 ing a germination test will be twenty-five cents per sample. 

 Seeds will be tested for any resident of the state, whether a 

 dealer or not, at the above rates. 



Methods of Examination and Testing: 



For purity tests the regulations offered in Circular No. 34 of 

 the Office of Experiment Stations are followed with only minor 

 variations. A portion of the original sample is filed away in a 

 properly numbered, heavy manila envelope for future use or for 

 a retest if one is demanded. A smaller envelope which contains 

 the pure seed obtained upon separation is also filed within the 

 larger one. An ordinary card index file with 5x8 drawers, 

 divided, is used for this ])urpose. 



The germinating chamber is a " home-made " affair, 2;^ x 

 2i X 5 feet over all. It contains 22 shelves two feet square. 

 The shelves are made of quarter-inch mesh galvanized wire net- 

 ting, bound on the edges with galvanized iron. The temper- 

 ature and humidity is maintained by means of water contained 

 in a copper cylinder, 12 inches in diameter and 10 inches deep, 

 suspended from the bottom of the chamber. The water is kept 

 at the i)r()i)er temi)eratur(! by either a gas flame or an electric 

 bulb j)laced underneath and contn^lied by a thermostat. The 

 seeds are placed in folds of l)lotting paper on the trays, the 

 latter being l)oth removable and interchangealile. 



The records of all tests and examinations are kept in a special- 

 ly designed l)()ok, a duplicate of the original being detached and 

 f(;rwarded as the official report to the sender of the sami)le. 

 Th(! form of the record kept, a view of the germinating chamber, 

 a corner of the seed testing room, and the style of envelope 

 used for filing may be noted from the illustrations. 



