598 Analyses of Ashes of Plants. 
Case 1. — Specimen of Hopelon Wheat. 
(Estimation on 30 or 40 heads.) 
Actual Quantities in Grains. Per Centage." 
Grain . . 1,855 or Grain. . 45 '6 
Straw . . 1,828 ,, Straw. . 45-0 ) r. . 
Chaff . . 384 Chaff. . 9-4 [ 
4,067 100-0 
(Estimation on a larger quantity.) 
Actual Quantities in Grains. Per Ceutagc. 
Grain . . 10,650 or Grain . . 45*0 
23,681 100-0 
This deviation of per centage between the large and small 
quantities is quite within the errors of anal} sis. 
On the large specimen the straw and chaff were weighed 
together, on account of the immense labour involved in their 
perfect separation, which has always, however, been effected on 
the small samples. In all the instances given the grain was 
separated entirely by hand. 
Case 2. — Another Specimen of Hopelon Wheat. 
(Estimation on 40 or 50 lieads.) 
Actual Quantities in Grains. Per Centage. 
Grain . . 2,112 or Grain. . 42-45 
Straw . . 2,453 ,, Straw. . 49*3 )(-•,. tr 
Chaff . . 410 ,, Chaff. . 8-25r'"^^ 
4,975 100-00 
(Estimation on a larger quantity.) 
Actual Quantities in Grains. Per Centage. 
Grain . .18,160 or Grain. . 42*4 
Straw ) r,A anct Straw 
Chaff 
24,676 ,, g;--} . 57-6 
42,836 1000 
Case 3. — Specimen of Hopelon Wheat. 
(Estimation on 60 or 70 heads.) 
Actual Quantities in Grains. Per Centage. 
Grain .. 4,500 or Grain . . 37-5 
Stiaw . . 6,650 ,, Straw . . 55-46) „^ ^ 
Chaff . . 840 ,, Chaff . . 7-04j 
11,990 100-00 
