612 
Analyses of Ashes of Plants. 
Specimen No. 16.— Talavera or Spring Wheat. 
From Sir John Johnstone* 
[Soil, calcareous loam ; subsoil^ rock ; geological formation, oolitic lime- 
stone ; undrained. Old grass-land broken up for oats in the spring 
of 1839. After poor crop of diseased potatoes, raised by 14 or 15 
cart-loads of farm-yard manure per acre, sown broadcast at the end 
of February, 1846; crop appeared thin; bagged August 22nd. 
Estimated yield 12 bushels per acre, the seed being bad ; straw small 
but strong ; grain good, 62 lbs. to the bushel.] 
Average length of the straw 
Relation of grain, straw, and chaff: — 
38 inches. 
Grain 
Straw 
Chaff 
Total 
Actual Quantities 
. 498 
. 575 
87 
. 1160 
Per Centage 
42-93 
49*57 
7-50 
56 07 
Grain as 1000 
1000-0 
1155-01 
174-9/ 
1329 0 
100-00 
2329-9 
Specific gravity of the grain 
Per centage of water and ash : — 
Water. 
1-373 
Grain . 
Straw . 
Chaff . 
12-00 
12-41 
12-21 
Ash. 
1*69 
5-03 
16-47 
Ash calcul:ite<l 
on dry substance. 
1-92 
5 79 
18-76 
Produce and mineral matter of an acre : 
Produce, 
cwts. U»s. 
Mineral Matter, 
lbs. 
Grain . 
Straw . 
Chaff . . 
. 6 72 
• 7 73f|, 
. 1 18^1, 
- . l^l-b 
• - 43^ 
- - 21^1, 
Total 
. 15 53/5 
77ft 
Specimen No. 17. — Creeping Wheat. 
From Sir John Johnstone.\ 
\^Soil, calcareous loim ; subsoil, rock ; geological formation, oolitic 
limestone ; undrained. _ After poor crop of diseased potatoes, raised 
by farm-yard manure, sown broadcast the end of February; looked 
well till the dry weather set in; iai/fjr^'c/ August 22ntl. Estimated 
yield 20 bushels per acre; straw slender; grain good ijuality, 62 lbs. 
to the bushel.] 
Average length of the straw . . 39 inches. 
From a farm in the occujialioii of Mr. William Coulson, Siliilio. 
t From same farm aa No. 16 specimen. 
