CLOVERS AND OTHER LEGUMES 265 



your notebook and place there a record of the analysis of 

 your sample by substituting the right names and nximbers : 



Record of Seed Analysis 



Kind of seed Red Clover 



Secured from John Jones 



Percentage of pure seed 95.237 



Percentage of weed seeds 3.133 



Percentage of dirt and inert matter 1.630 



Weed seed present : 



Buckhom 0.526 



Curled dock 1.3 



Pigweed 0.2 



Peppergrass ■ 0.05 



Foxtail 1.054 



Crab grass 0.003 



Total 3.133 



Percentage of germinable seeds 91 



Percentage of non-germinable seeds .... .9 



Date of Analysis William Brown, Analyst 



202. Table of Weed Seed Weights. — In the first 

 column of numbers below is given the number of seeds of 

 each of the common weeds, required to make one per cent 

 of a rounded teaspoonful of clover or alfalfa seed ; in the 

 second column are the numbers of seeds of the respective 

 weeds required to make one per cent of a sample of the 

 same size of timothy or millet seed : 



Velvet leaf 5 4 



Quack grass 20 16 



Tumbleweed 135 110 



Small ragweed 20 16 



Wild mustard 24 19 



Black mustard 62 48 



Lambsquarter 72 57 



Canada thistle 45 36 



Wild carrot 63 50 



Smooth crab grass 192 155 



