Fig. I.— Showing three stages in the developmentl'of the cucumber seedling: 5, seed; 

 5', seed split in halves; £■, embryo ; /;/, hilum; m. micropyle: r, radicle; //, nypocotyl ; 

 oji;, outer seed coat : zVi:, inner seed coat : c, cotyledon: e, plumule: scr, secondary roots: 

 /> peg. 



