PLAN OF IHK INVKSTHiATlnN. 33 



The yield of extract <>n the dry basis I-]' is computetl from " K " by the fol- 

 lowing formula : 



E , = K X 100 

 100 H 



Windiseh's extract lables >ln>nld be employed. Tlie saccharifying or dia 



static power of the malt is regarded as \ er\ i: I. if the iodin test shows the 



absence of -tardi in the mash, when the temperature has reached TI> < '. : as 

 u'ood. if inversion takes place within ti\e minutes, and as fair, if inversion 



takes place after ten inimiN 



To determine the protein di--ol\ed by ma-hin^. _'." cc of ma>h 

 liltratc \\ere evaporated almo-t to dryne s ami nitrogen 



In Kjeldahl'- metho(l. the coagulahle protein beinir 

 in the -ante manner a- in barley. 

 The irrowth i> the ratio ,,f the l.-n.irth of the aci-,,-pire to that of 

 the kernel. The determination ua- made in duplicate by >orting 

 .">() kernel-. , 



The culor f the uort ua- te-ted by LnxibmidV tintometer and 

 the run of the \\oit by per-onal ju.lirmeiit. The other determina- 

 te re conducted in the -ame manner if foi- barley. 



MM II \N H \l. \M> BIOUH.K \|. Ml I ||. \ \l.\ SIS. 



The \\ei^rht j>er 1 .1 M M o;,-;,!,,^ U;l> determined in the Bureau of 

 Chemi-try l\ mean- of Kiekelhayn'- apjaratn-. 



The hulls, bran, embryo, and endosperm were all determined in 

 the Mierochemical Lah<.rator\ by meehaniral di->ertion of the rrain. 

 I he method of procedure i- de^'riU'd by \\ . .1. Voimo; a- follow-: 



in ' to s ;;,inl. ;i\era'e L'l'ain- \\': 1. ami after wei-hiii;: t hey 



,.M! until the hulls rmilil l>e remo\ ( -,l n-.-nlily. li-inu' then snl)JM-ie<| |.- 

 fnrther snaking until the emlos|erm was rompN-tely softened. The ^niins 

 \\ere tinally split lemrthwise. ami the emlosperm n-moved nmler water. The 

 hulls. l>ran. and embryos were plaeed l>\ thems4>l\es in watch glasses, and 

 drietl at lm ( \ until loss of weight eejis^d. The water e.intaining the end.. 

 s|H'rm was allowed to stand in a beaker until the starch sottl<d. when the 

 water vafl -I. Canted and the sediment drietl with u'entle heat until moisture 

 \\a> no lon-er apparent, when the drying was .-..nipleted at 1<HI ( 1 . More or 

 lorn was observed as a result of this method of drying the endosperm. 

 and this M great in the case of the malts that in these the endosperm 



wa- determined by difference. 



In the later work on barleys the endosperm was determined by dif- 

 ference in order to obtain result> comparable with those obtained 

 from the analy-i- of the malt-. 



The phy-ical te-t- a- made by \Yahl are a- follows: The character 

 of the endo-perm wa- determined by usinjf the Kickelhayn grain cut- 

 ter. Thi- apparatus cuts :>() berries in two lenirthwi-e at one time. 

 The halve- are then easily divided into three groups, namely, those 



