1.0 



No. 



1 



2 



3 



4 



5 







7 



8 



9 



10 



U 



12 



13 



14 



l.-j 



16 



17 



18 



1!» 



•|'.\i;i.i-; V. AMur.vT or sdi.ui mattei; dissdlxkd i;v wai 



FROM lOJ GUAMS OF KÖJI AT 10— 15°C. 



i-:i! 



11 



Volume 



of 



water used 



c. c. 

 501) 



1000 



III 



Tims 



lirs. 

 12 



18 



12 



IV 



Weight of 



solid iiiattei- 



in solution 



2000 

 2.500 



500« 

 10000 



2» 



17.7 

 25.7 

 21. -J 

 2:5.0 

 .S3. 3 

 ^3.3 

 2:1.4 

 2S.H 

 2ii.S 

 22.5 

 22.2 

 2H.0 

 31.1 

 32.2 

 32.5 

 30.7 

 30.1 

 30.0 

 4(1.0 



A vorage 



■weight of 



.«^olid matter 



VI 



Percent, of 

 dextrose in 

 solid matter 



GO.O 



27.0 



!1.4 



40.0 

 .50.9 

 45.0 

 40.5 

 53.0 

 53.0 

 54.0 



08.0 

 r,n.n 



70.0 



05.0 



08.0 

 47.0 

 (iti.O 



VII 



Specific 

 rotatory 

 power 



01° 



55.7 



50.0 



>'.5.3 



05.4 



(12. '.I 



(;7.7 



(51.4 



04.5 



05.0 



('.1.4 



78.0 



08.1 



05.2 



73.8 



70.2 



04.5 



00.5 



VIII 



A verage 

 specitic rota 

 tory power. 



57°.0 



^ 04°.0 



00°. 3 



liny ili'ßnitc conclusions from single experiments, but tlie very large percentage 

 dissolved when 100 grams of koji were digested witli 10000 c.c. of water, l)«irs 

 ont tlic iiliove ohserviitions. 



We liiivo nc.\t to consider tlie intlcenee of time upmi tlie iioture of the 

 s<ihdile matter. We have seen that it docs not after 3 or 4 hours at tlie ordinary 

 tcmpenitiire affect very loiK^ii \\)r total amount of solids dissolved. But column 

 VII F, whicii gives the average specific rotatory power of three series of experi- 

 ments lasting rcsiK.'ctively 18, 12, and 3 lioms, sliows tliat at IS lionis tlic sjxiciric 

 rotatory power is .'■nuiller tiiaii at IJ hours, and at 12 iioiirs less than at 3 hours. 

 What is the meaning of lids \aiiation? 'I'lie spccilic rotjitory power of tlie 

 Holiilion is made lip of three faclors. The specific rotatory pov.er of dextrin is 

 '21<)', tliat of dextKh-iC is öl)-. If these were tiie only two sidisfjinccs present tlie 

 sjiecific rotatory jiower of the solution would lie hetweeii these two nuinhers 



