New York Agricultueal Experiment Station. 183 



ations; 52 weighed less than half an ounce, 27 half an ounce, 37 

 three-fourths of an ounce, 31 one ounce, 21 one and one-half 

 ounces and 85 two ounces or more. 



General appearance. — Leaving impurities out of consideration 

 and regarding principally color, size and plumpness, 4 samples 

 were poor, 5 poor to average, 27 average, 26 average to excellent 

 and 121 excellent. 



Dodder. — Only 12 samples contained dodder — 5 large-seeded 

 dodder only, 3 small-seeded only and 4 both kinds, the number of 

 seeds to the pound ranging from 6 to 96 in 8 samples and from 

 272 to 2688 in the other 4 samples. 



Adulterated samples. — Two samples of red clover were found 

 to contain at least 5 per ct. of a single impurity and are there- 

 fore classed as adulterated. One sample contained 35 per ct. 

 of alsike clover and 60 per ct. of yellow trefoil; and the other 

 sample 5 per ct. of alsike clover. 



Weed seeds found, — The following list gives the foreign seeds 

 which occurred most frequently. The figures indicate the number 

 of samples in which the given impurity occurred. 



Table 1. — Common Impurities of Red Clover Seed. 



Amount. Amount. 



Con- Total Con- Total 



sider- no. of eider- no. of 



Impurity. Traces, able, samples. Impuiity. Traces, able, samples. 



English plantain 157 6 163 Lamb's quarters.... 94 1 95 



Curled dock 14G 1 147 Sheep sorrel 90 6 96 



Wild carrot 20 ... 20 Broad plantain 98 1 99 



Canada thistle 16 . . . 16 Rag^veed 72 1 73 



Chicory 6 ... 6 Lady's thumb 65 ... 65 



Mustard (Brassica Catclitiy 51 1 52 



sp. ) 12 ... 12 Yellow foxtail 27 ... 27 



Green foxtail 143 5 148 Pig- weed 24 ... 24 



Timothy 99 2 101 Crab-grass 23 1 24 



Alaike clover 101 5 106 Yellow trefoil 20 . . . 20 



All the impurities in the following list were taken from one 

 red clover sample, showing what may be expected in typical low- 

 grade seed : Four per ct. of green foxtail, considerable crab 

 grass, traces of English plantain, curled dock, rag'weed, Canada 



