Analyses of Ashes of Plants. 
509 
(Estimation on a full-sized sheaf.) 
Actual Quantities in Grains. Per Centage. 
Grain . . 26,450 or Grain . . 37-74 
70,100 lOO-OO 
Case 4. — Specimen of Red-Strmo White Wlieat. 
(Estimation on about 60 or 70 heads.) 
Actual Quantities in Grains. Per Centage. 
Grain . . 4,980 or Grain . . 44-7 
Straw . . 5,220 ,, Straw . . 46-861 , 
Chaff . . 940 ,, Chaff . . 8-41 j 
11,140 100-00 
(Another estimation on ahout 30 heads made at a different time.) 
Actual Quantities in Grains. Per Centage. 
Grain .. 1,141 or Grain . . 46-25 
Straw . . 1,120 ,, Straw . . 45-4 l-o... 
Chaff . . 206 ,, Chaff . . S-Bo]^"^ 
2,467 100-00 
(Estimation on a large sheaf.) 
Actual Quantities in Grains. Per Centage. 
Grain . . 30,100 or Grain . . 46-1 
Straw 
Cha 
65,270 100-0 
We have given the two estimations on small quantities in tlio 
above case, because the deviation from the result obtained in the 
large specimen is more manifest than in any other instance. 
One of the small quantities gives almost exactly the same pro- 
portions as the large ; and what after all is the amount of error 
in the other instance ? It is somewhat less than 1 • 5 per cent. 
Our most sanguine expectations did not contemplate so near 
an approach to accuracy as even this; but the other results we 
have stated are still more satisfactory, and demonstrate that the 
method we have adopted is not open to any serious ohjection. 
We have been thus minute on this point as our results appear 
somewhat to militate against the notion generally entertained 
respecting the proportion of straw and grain. 
We shall, however, reserve our further remarks on this subject 
to the conclusion of the report. 
