1907.] Milling Properties of Oats. 261 



the produce of the same original sample of seed. In the 

 largest and most important variety test the grain was not 

 only grown on the same field, and milled in the same mill, 

 but, in order to eliminate the effect of the soil and climate, 

 the seed was obtained from varieties grown side by side in the 

 previous year. The most important tests were supervised 

 by one of us, who is a practical miller. 



In considering the results, it will be convenient to deal 

 with the following questions : — (1) Are the new cross-bred 

 and foreign oats as good millers as the old strains ? (2) Do 

 the laboratory estimates agree with the milling tests ? (3) Do 

 the heaviest oats give the largest quantity of meal ? (4) What 

 is the effect of soil on milling property ? 



Old versus New Strains as Millers. — The Potato oat is the 

 most widely grown in Scotland and the North of England, 

 and may be regarded as the standard for comparison. In 

 1903, milling tests were made by the College in Ross and 

 Cromarty and in Morayshire. From the following table it 

 will be seen that the old strains were superior in the former 

 and inferior in the latter county, but the differences are slight : — 





Ross and Cromarty 



Morayshire 





(average of four tests). 



(one test). 





Per cent. 



Per cent. 





of Meal. 



of Meal. 



Old strains — 







Sandy 



58-1 



57"o 



Potato 



55'4 



59'4 



Hamilton... 



53'4 





Average ... 



55-6 



58-2 



Cross breds — 







Newmarket ... • ... 



56-8 



6o-8 



Goldfinder 



53'i 



6i-i 



Waverley 



53°5 



58-8 



Storm King 



... ... 53-8 



6i-7 



Average ... 



... ... 54*3 



6o-6 



Importations — 







Banner 



54'7 



59'9 



Siberian ... 





60 • 1 



Average ... 





60 "O 



In Aberdeenshire, in 1904, forty comparative trials were 

 made at five country meal mills. The quantity of grain tested 

 was only 4 bushels, but the individual figures coincide fairly 

 well with the average results ; in fact, Potato and Scotch 



