Show cellule foud in i meet I 1 plant matter most type types of plant matter con tain large amounts of cellulose celi a as well as a starch is for formed me d by the linking together of lr largo num bers of molecule molecules of certain sugars known as the henos ug sug ars which include all of the familiar sugars an are characterized by the fact that they contain a string of six carbon atom atoms in their molecule molecules Corn corncob cobs gram grain hull hulls and str trw W and dried ugar sugar cn stalks contain in addition ft a claes class of compound compounds known ax as are alo also built up from a large number of sugar molecules but of a st type known as pen toses containing five instead of t six carbon atom atoms when are heated with dilute acids says a writer in the chicago tribune extensive decomposition takes place with the formation of caramel and various organic acids similar sunder treatment applied to pen pea toses results in the formation of a large amount of furfural tural tur a clear water insoluble liquid with a R characteristic pungent odor furfural different dif from all other cheaply produced organic corn com pounds has its most important us in the refining of petroleum lubricants furfural is one of those compounds that do not dissolve in the oil but are ate capable of washing out from it a large part ot of the tarry materials that detract from its lubricating properties |