108  Improvement  of  Land  by  Warping . 
IV. — Rye  ( Secale  cereale). 
CL. 
13. 
y. 
S. 
Sulphuric  aciil 
0-514 
2-606 
0-170 
0-510 
Phosphoric  acid  . . 
• 
33-515 
25-070 
39-920 
51-810 
Potash  .... 
10-569 
9-430 
33-S80 
11-430 
Soda 
19-908 
16-127 
0-390 
18-890 
Chloride  of  sodium  . 
. . • • 
1 - G 1 7 
4-100 
, , 
, . 
Chloride  of  potassium 
• 
. . 
. , 
. , 
Lime 
11-251 
15-300 
2-610 
7-050 
Magnesia  .... 
13-010 
10-099 
12-810 
10-570 
Alumina  .... 
, , 
0-501 
, . 
Oxide  of  iron 
, . 
2-161 
1-040 
1-900 
Oxide  of  manganese  . 
. • 
. , 
. , 
. . 
, . 
Silicic  acid  . . . 
3-616 
14-606 
9-220 
0-690 
100-000 
100-000 
100-040 
102-850 
Percentage  of  ash  from 
the  fresh  grain 
. 1-264 
0-990 
1-360 
dried  grain 
. 2-655 
1-896 
• . 
2-425 
» » nitrogen 
in  the  dried  1 
. 2-110 
1-602 
grain 
. . . . J 
a.  This  specimen  was  obtained  from  warped  land  on  the  banks 
of  the  Ouse,  Yorkshire ; produce  and  locality  unknown. 
/3.  Labelled  “This  rye  was  grown  upon  the  natural  sandy  soil, 
which  has  never  been  warped;  produce  2 qrs.  (16  bshls.)  per 
acre.  The  land  was  contiguous  to  that  upon  which  the  preceding 
sample  (/3  specimen)  of  wheat  was  grown.” 
y.  Composition  of  the  inorganic  constituents  of  rye  as  given 
by  Way. 
5.  Analysis  of  the  same,  by  Bichon. 
Concluding  Remarks. 
In  the  first  place,  if  we  compare  the  analysis  of  the  warping 
water  in  its  two  different  states,  as  taken  whilst  entering  into  and 
returning  from  the  main  drain,  we  shall  see,  that  it  has  experi- 
enced very  little  change  in  composition  during  the  process,  except 
in  the  proportion  of  the  warp  or  insoluble  matters  which  it  held 
in  suspension ; consequently,  if  we  leave  out  of  consideration  what 
is  owing  to  the  saline  ingredients  of  the  water  absorbed  by  the 
soil,  it  is  evident  that  the  whole  of  the  increased  fertility  which  is 
conferred  upon  land  by  warping  is  produced  by  the  mud  or  silt 
which  is  deposited  by  the  water.  Nor,  in  fact,  is  the  proportion 
of  deposit  so  produced  by  any  means  inconsiderable ; in  the 
specimens  examined,  whilst  the  water  in  its  former  state  con- 
tained 233^  grains  per  gallon  of  insoluble  matters  separable  by  a 
filter,  the  second  specimen  contained  only  24  grains.  A gallon 
of  the  river-water,  therefore,  during  the  time  which  elapsed 
