21 



This is advanced by Shaw when he says (49) that the main 

 reason for the difference is physiological, and lies in the 

 greater reserve supply in the larger seed. It has been shown, 

 he goes on to say, that heavier seeds possess more of the im- 

 portant plant foods (phosphoric acid, nitrogen and potash (50) ) 

 Continuing, he says that there is abundant material immediately 

 available to the plantlet and the young plant is soon in a po- 

 sition to take a vigorous hold upon the soil* 



Blanohard, (51) gives the same reason and goes on to say 

 that this is a fact well understood by all who are endeavoring 

 to improve their crops by careful and practical selection of 



seed. 



In connection with the sub- 

 ject of effect of inheritance in 

 the case of wheat a cut, herewith 

 reproduced, in Seed Wheat by Cobb 

 (52) shows the variation in the 

 size of kernels in the same spike. 



Lyon (53) quotes BUnker who gave 

 the weights of individual grains of 

 a spike which was presented as be- 

 ing an average head; the figures 

 show kernels varying from 36 to 71 

 milligrams. This cut from Cobb's 

 work bears out the observation of 

 others that the heaviest grains in a 

 spike are found in the lower middle 

 part. 



A suggestion comes from the 





*houn r 



- 



d with lii 



i'OllJd I* 



"ii the . . 



tainty nf in. : 

 ng- 



r tin- I] 



A_:i i, tilhir.' in tin* 

 1 dat.i as to 

 varieties of wheat 

 'I'll.- record i.r his 

 Anniiji] Ufpurt of 

 :-li"\is tli.it rln- 



!< \n\],,\\ 



l/White i, ; m 



_>portuD 

 traveuin 



I>artsof the State 

 fects, and the infor- 



that the samples 

 he present in.jini v 

 the following, und 

 pie Straw, :,-2/ 

 wedel, 14; Red 

 % ; Blount'a Lam- 



. at the time of col- 

 J wheat being "i\\n 

 immas, and Strin- 

 *e of Purple Straw, 

 e*e varieties either 

 cause they can get 

 give the man 

 pver c-nni.-s liandv. 

 dismiss this latter 

 on, as experivn.-f 

 d opinions, and ;iii- 

 neglect to think 

 > make a living. 

 rnatives, namely, 

 ties because thc'-v 

 an get no others, 

 he former. Other 

 " within the reach 

 ' use some otlitT 

 iimot get it, nor 



This Rt.-1'lns tu tin- 



the farmers must 

 sey Consider them 

 o grow. 





Fig, 11. \ 



Defiance wheat, 

 with th, 

 arranged as ei- 

 tracted from one 



side of i'. 



