14S 
Anali/xes of the Axhcs of Plants, 
Tlio composition of the ash of the grey peas is given in the 
next table. 
Composition in 100 parts of the Asli of Prolific Maple or Grey 
Peas. 
Silica 
Phosphoric Acid . 
Sulphiiiic Acid . . 
Carlionic Acid . . 
Lime 
Magnesia .... 
Peroxide of Iron . . 
Potash 
Soda 
Chloride of Sodium . 
Clilo:ide of Potassium 
Total .... 
No. ] . 
Seed. 
No. 2. 
Produce on 
Clay. 
No. 3. 
Produce on 
Silicious 
Sand. 
Mean. 
1 
74 
0-68 
0 
62 
1-01 
29 
92 
36-50 
30 
82 
32-41 
6 
23 
4-47 
5 
38 
5-36 
4 
38 
0-S2 
1 
60 
2-27 
5 
73 
4-78 
7 
81 
6-11 
5 
92 
5-78 
6 
77 
6-16 
0 
44 
0-18 
0 
30 
0-31 
42 
43 
41-70 
42 
00 
42-01 
3 
27 
1-09 
1-24 
0-41 
3-82 
4 
70 
2- 84 
99 
96 
99-97 
100 
00 
99-98 
Total Sulphur in 1000 grains of the Grey Peas undried. 
Seed. 
1-691 
Produce on Clay. 
2-183 
Produce on Sand, 
2-254 
It will be seen that the ash of peas is principally composed of 
phosphoric acid and potash ; these two substances forming nearly 
three-fourths of the whole mineral matter. 
With respect to the influence of the soil upon the mineral 
constitution of these specimens, it is difficult to form any very 
decided opinions. If the first of these tables is inspected, it will 
be seen that very little differences exist between the seed and the 
produce on sand or clay. The second table exhibits a difference 
in the phosphoric acid of the clay specimen, but on the whole 
the deviations in this case are not strongly marked. 
On the other hand, it would seem that a slight difference of 
composition is to be traced to the variety ; for if a comparison is 
made of the mean composition of the ash of grey and white peas, 
it will be found tliat the percentage of phosphoric acid is lower, 
and of potash higher, in the former than in the latter specimens. 
The straw of these specimens was also analysed, the pods being 
included. 
