516 
Fourth  Report  on  the  Analysis 
produce  of  hops,  we  should  have  no  hesitation  in  classing  it 
amongst  those  requiring  the  highest  amount  of  mineral  matters. 
We  have  already  stated  that  the  produce  of  1848  was  unusually 
great,*  and  the  average  produce  of  good  hop  land  cannot  be  placed 
at  more  than  6 or  7 cwt.  per  acre.  A simple  division  of  the 
foregoing  numbers  by  3 will  therefore  give  the  ordinary  mineral 
exhaustion  by  hop  cultivation. 
The  attentive  reader  will,  from  the  aggregate  mineral  matters 
of  the  bine  and  leaves,  be  at  once  sensible  of  the  great  necessity 
of  their  careful  preservation  and  restoration  to  the  soil  in  manure 
or  otherwise.  He  will  also  be  led  to  inquire  how  far,  in  ordinary 
practice,  he  compensates  for  the  large  draughts  of  phosphoric  acid 
and  potash  which,  by  the  perpetual  cultivation  of  hops,  he  is 
yearly  making  upon  the  stores  of  the  soil. 
Seeds  of  Turnip,  Mangold,  Carrot,  fyc. — The  following  are 
analyses  of  the  seeds  of  some  commonly  cultivated  plants,  obtained 
from  Messrs.  Gibbs,  of  Half-Moon  Street : — 
Per  centage  of  Water  and  Ash  in  Various  Seeds  : — 
Ash  calcu- 
Sulphur 
Water. 
Ash. 
luted  on 
on  1000 
Dry  Sub- 
Grains 
stance. 
undried. 
Long  Red  Surrey  Carrot) 
Seed J 
13-00 
8-73 
10-03 
3-05 
Sainfoin  Seed  . . . 
16-00 
4-43 
5-27 
3-33 
Italian  Rye-Grass  Seed 
11-70 
6-10 
6-91 
3-06 
Orange-globe  Mangold-) 
wurzel  Seed  . . . j 
11-66 
5*83 
6-58 
•90 
Norfolk  White  Turnip) 
Seed J 
7-70 
3-67 
3-98 
S-85 
White  Mustard  Seed  . 
8-50 
4-07 
4-45 
12-12 
Composition  in  100  parts  of  the  Ash  of  Various  Seeds  : — 
Sainfoin 
Italian 
Mangold- 
White 
Turnip 
Seed. 
Seed. 
Rye-Grass 
Seed. 
W urzel 
Seed. 
Mustard 
Seed. 
Seed. 
Silica  .... 
4-50 
•71 
50-55 
1-86 
1-31 
•67 
Phosphoric  Acid  • 
13-38 
20-74 
17-89 
13-35 
44-97 
40-17 
Sulphuric  Acid 
4-80 
2-81 
2-31 
3-64 
2-19 
7-10 
Carbonic  Acid  . 
15-13 
13-25 
•44 
13-85 
• • 
•82 
Lime  .... 
32-96 
27-39 
9-98 
13-42 
19-10 
17-40 
Magnesia  . . . 
5-70 
5-77 
5-26 
15-22 
5-90 
8-74 
Peroxide  of  Iron 
•84 
1-38 
2-36 
•40 
•39 
1-95 
Potash  .... 
16-21 
24-75 
9-51 
16-08 
25-78 
21-91 
Soda  .... 
1-23 
1-46 
•06 
6-86 
•33 
1-23 
Chloride  of  Potassium 
none. 
none. 
none. 
none. 
none. 
none. 
Chloride  of  Sodium 
5-24 
1-73 
1 • 62 
15-30 
traces. 
traces. 
99-99 
99-99 
99-98 
99-98 
99-97 
99-99 
* We  are  informed  by  Mr.  Paine  that  this  year’s  yield  of  hops  on  his  land  will,  on 
the  average  of  the  whole  of  his  extensive  plantations,  very  closely  approximate  to  the 
above  high  estimate. — October,  1850. 
