462 



BIOLOGY FOR BEGINNERS 



is used in paints, and rosin in all kinds of varnish, soaps, cements, 

 and soldering. Wood alcohol, acetic acid, and charcoal are all 



FIG. 147. Dyer's Indigo Shrub (Indigofera tinctoria, Pulse Family, Legu- 

 minoscB). Flowering branch; a, flower, enlarged; b, standard (uppermost 

 petal), back view; c, wing (side petal), inner view; d, e, keel-petal, inner and 

 outer views; /, flower with corolla removed; g, pistil; h, fruit, natural size; 

 i, seed; k, same, cut vertically. (Berg and Schmidt.) Shrub growing 2 m. 

 tall; leaves downy beneath; flowers reddish yellow; fruit dry. Native home, 

 Southern Asia. From Sargent. 



