498 
Fourth  Report  on  the  Analysis 
Carrots  and  leaves;  Hops,  flowers,  leaves,  and  bine;  Potatoes,  tubers 
and  haulm ; Flax,  the  various  parts ; Various  Seeds,  Gorse,  Green 
Rape,  and  the  most  important  Natural  and  Artificial  Grasses. 
The  specimens  of  oats  which  we  are  about  to  describe  were 
grown  for  us  in  the  year  1847,  on  a stiff  clay  and  a silicious  sand, 
by  the  kindness  of  Mr.  Druce,  of  Ensham,  near  Oxford,  and  Mr. 
Morton,  of  Whitfield,  respectively.  They  formed  part  of  a series 
including  barley,  oats,  peas,  and  beans,  of  which  the  two  latter 
have  already  been  described.  The  varieties  of  oats  selected  were 
the  Hopeton  and  the  Poland,  the  seed  being  obtained  from 
Messrs.  Gibbs,  of  Half-Moon  Street. 
Hopeton  Oats. 
Per  centage  of  water  and  ash  in  three  specimens  of  Hopeton  oats  : — 
Water. 
No.  1.— The  Seed  . . . 10-20 
No.  2. — Produce  on  Clay  . 10-20 
No.  3. — Produce  on  Sand  . 11 '25 
Ash. 
2- 36 
3- 57 
3-23 
Ash  calculated 
on  dry  substance. 
• • 2-62 
• • 3-75 
• • 3-63 
The  composition  of  the  ash  was  as  follows : — • 
Composition  in  100  parts  of  the  ash  of  Hopeton  oats : — * 
No.  1. 
The  Seed. 
No.  2. 
Produce 
on  Clay. 
No.  3. 
Produce 
on  Sand. 
Silica  ..... 
Phosphoric  Acid 
Sulphuric  Acid 
Carbonic  Acid 
Lime  ..... 
Magnesia  .... 
Peroxide  of  Iron  . . 
Potash 
Soda 
Chloride  of  Potassium  . 
Chloride  of  Sodium  . 
51-51 
18-30 
-2-54 
1- 35 
2- 76 
6-79 
trace. 
13-58 
•46 
none. 
2-64 
47-80 
23-60 
2-26 
none. 
4-19 
6-09 
•41 
14-82 
•80 
41-74 
26- 18 
1- 95 
none. 
4-06 
6-2S 
2- 05 
15-95 
1-73 
Total  . 
99-93 
99-97 
99-94 
The  total  sulphur  in  1000  grains  of  the  undried  specimens  was 
found  to  be — 
Seed.  Produce  on  Clay.  Produce  on  Sand. 
3*54  • • 2' 00  ' • • 1*76 
Reserving  any  remarks  which  may  arise  out  of  these  analyses 
until  we  have  the  whole  subject  before  us,  we  pass  on  to  the 
specimens  of  potato-oats. 
* It  is  to  he  understood  that  the  oafs  were  analyzed  with  their  envelopes  just  as  they 
are  separated  from  the  straw  in  the  threshing. 
