HOME AND SCHOOL EXERCISES 75 



BLACK SKKD 

 yiAT SEED OBLONG SEEP ANGULAR SEED 



• 



Water Melon Black Ctw Pea »!'"» *eeii 



RED SEED 





Rod Dent Corn ^^"^ ^o^s Boan 



BP.OV?« SEED 



beggar Tlcita CTbLiSge 



REDDISH BROm{ 



c y 



SLEWOEH SEfJD 



Eockivbc-at Spaninh Meertlea 



Rajl Ked Ripper Cow Pea. Curled Bock Alfilarla 



WHITE 



in m 



Squash Black Eye Cow Pea. Saffron Curled Lettuce 



TEllOW SHADES 



Yellow Dent Corn Wiea'. Yell.™ Soy Beon Pro30 Millet' 



Fig. 49. — A reference collection of seeds to use in detecting impurities in seed 

 samples. Tlie seeds are placed in holes in Beaver board. Panes of glass are then 

 placed on both front and back and are bound with black paper. (U. S. D. A.) 



