DISCUSSION OF RESULTS. 



37 



cording to their protein content. a very pronounced tendency in the 

 direction of (lie theoretical reaction U'tween protein and extract U 



seen. 



/////> //N- frtitu stati 

 hi tin; n 



f t)u- nnrthirn \l /\.v/\ x//</>/ \alliii slunrintj tin' relation 

 . ./*/;//, ami triialit // l.nnn 



( )nly the laM irroiip. .-out a ininir t'l'uin 1:;..". to 1 1 per cent of protein, 

 form- an \ception to (lie ireneral rule that the jHTcentaue of extract 

 decrea-ev \\ii|, : ,n iucn-a-inir protein content. 'I'he tahle further indi- 

 CfttCfl thai there i- a L'lealer de iva^e in .\irac| fr lai'ley containing 

 from Id to 1-J pei- cent of protein than in that containing from 1-J to 

 1 \ per cent. 



Krom th.-e result- it i~ \ei\ evident that hidi-pnitein larley< of 

 the r. |-..\\ lype ir'ive low exii'a.t \ ield~. a t'a.-l which ha- l>een < >l -erve. I 

 hv inanv other-, e-prciallv in I'eirard to -J-rmv Imrlev 



\\ i n. n i i-i i: 1 ,<>()() CKAINS. 



IM I. \ I I \ 



V -11111:11111 ' -howed that ln\\ -pi'otein -J-rn\v liarley> were 

 of hiirlin- uei^ht and that they produced more extract. The results 

 here >lm\vn indicate aNo that low protein harley- of the ('.-row type 

 j!i ^omewhat. though vry little, more per l.O(M) irrain>. thu> 

 air:iin coi-rohoratinir Neumann'- work. Thi> i> shown ly the la>t 

 column of the preceding table, which ^ r iv- the average weight of 

 1,000 grains within the different groups. While it would appear from 

 the tahle a- if the \\eight of 1.IMM) grain- varies more or less irregu- 

 larly. e-pecially for Karley- containing from !_! to 14 per cent of 

 protein, there is an ohvioii- tendency for the weight of 1,000 grains 

 to decrea-e a- the protein content of the harley increases from 10 to 1-J 

 per cent, though there are many individual exceptions. 



If onecon-ider- those -ample- of approximately the same percental!" 

 of protein, it will l>e found that invariahlv the heavier contain the 



samples have leeii left out which either contained more than 14 per 

 rent of protein or had abnormally lar^e berries, together with much protein, 

 owin.u' to s|Ki-ial cultivation and breediiii:. 

 \V,.rhenschr. I'.ran.. I:MI.-. '22 :'.^. 



