104 
Improvement  of  Land  by  Warping. 
II. — Labelled  "Sandy  soil,  upon  which  warp  has  lain  these 
fifteen  years ; the  warp  was  eleven  inches  in  thickness,  and 
this  specimen  of  soil  lay  immediately  underneath.” 
Specific  gravity  at  56°  Fahren.  with  interstices  . 1-075 
True  specific  gravity  ....  .2-  106 
Composition  per  cent,  of  the  soil  hygrometrically  dried  at  60°  Fahren. 
Water  . . 
2-000 
Sand 
/Siliceous  granules  . 
‘ u \ Organic  matter 
. 83-572 
0-908 
Stones 
1-400 
Vegetable  fibre 
. very  little. 
Fine  earth  (anhydrous) 
1 1 • oua  / Inorganic  substances 
' ' J (Organic  matter 
5-248 
. 6-695 
Soluble  saline  matters 
. 0-177 
100-000 
Water. 
Pure  sand 
2-  0000 
835720 
Stones 
Organic  matters,  insoluble  in 
Humine  and  humic  acid 
Apocrenic  acid  . 
Crenic  acid  . 
Organic  matters,  soluble  in 
Chloride  of  calcium 
Chloride  of  sodium 
Chloride  of  potassium 
Sulphate  of  magnesia 
Sulphate  of  soda  . 
Carbonate  of  lime 
Carbonate  of  magnesia 
Sulphate  of  lime  . 
Lime  . 
wate 
ater 
and 
1 -4000 
alkalis  4-78601 
1-8800 
0-2394>  7-6150 
0-6969 
0-01271 
0-0004]  Salt, 
0-0781  soluble 
0 • 0429  > in 
traces  I water, 
0 ■ 0433  j 01647 
0-4582 
0-2949 
evident  traces 
0-1411 
Magnesia  .......  0 2586 
Alkalis  . . . . . . 0-1747 
Oxide  of  iron  ......  1-1747 
Alumina  .......  0-4079 
Oxide  of  manganese  .....  traces 
Perphosphate  of  iron  .....  0-2800* 
Silicic  acid,  and  undecomposed  silicates,  &e.  . 2-7666 
100-0000 
The  proportion  of  nitrogen  contained  in  this  soil  amounted 
to  0*4551  grain  per  cent.  = ammonia  0-5525. 
III. — This  specimen  was  labelled  “ Peat  moor  soil,  before  warp- 
ing.” 
The  hygrometrically  dried  soil  contained  per  cent,  of — 
* This  is  equivalent  to  0*  1326  gr.  of  phosphoric  acid,  and  0-2873  gr.  of  phosphate 
of  lime. 
