The girasole,3 Hetianthus tuberosus, has had much interest centered upon it since the report of JACKSON, SILSBEE and PROFFITT (4) on the possible commercial preparation from it of fructose, a sugar sweeter than sucrose, according to PAUL (7), DEERR (3), SALE and SKINNER (8), BIESTER, WOOD and WAHLIN (2) and SPENGLER and TRAEGEL (10). A survey of the plants which might serve as a source for the ...
