| OCR Text |
Show oo SUNFLOWER PITH IS LIGHTER THAN CORK The pith or medullln of the sunflower sun-flower stalk is by far the lightea known vegetablo substance. The structure and formation of all piths are essentially very similar, being composed of thlnwalled cellular tissue. The cells filling tho interior of tho sunflower sun-flower stalk when young contain sap a large number of starch grains. ine starch gradually disappears as the foliage, which is In communication with the pith, becomes fully organised After the leaves aro devoloped the pith soon dries up, leaving only the very thin walls of the cells. The pith in this state has a specific gravity of 0,028, while that of cork Is 0.24. One of Its chief uses is the mailing mail-ing of life-saving appliances, |
