Annual  Report  for  1909  of  the  Consulting  Chemist.  351 
thrive  uniformly  well.  I now  append  further  analyses  of  soils 
which  illustrate  this  : — 
(Soils  dried  at  212°  P.) 
A 
B 
C 
D 
Organic  matter  and  loss 
on  heating . 
5-66 
5^05 
5^24 
1P95 
Oxide  of  iron  . • . 
2-69 
236 
5^24 
5^91 
Alumina 
4-38 
3^85 
7^17 
6^72 
Lime  .... 
1-05 
■23 
■66 
■73 
Magnesia 
1-99 
P53 
2^32 
■80 
Potash  .... 
■47 
■38 
172 
■39 
Soda  .... 
■26 
■26 
P53 
■23 
Phosphoric  acid  . 
■08 
■06 
•22 
■17 
Sulphuric  acid 
■05 
■10 
■10 
•07 
Insoluble  silicates  and 
sand  .... 
83-B7 
86^18 
75^80 
73^03 
100^00 
10000 
100^00 
100^00 
Nitrogen 
■114 
■234 
■154 
■418 
“ A ” and  “ B ” were  soils  from  Staffordshire,  and  it  was 
complained  that,  though  basic  slag  had  been  applied  and  also 
farmyard  manure,  the  grass  would  hardly  keep  any  stock  on  it. 
“ C ” was  a soil  from  Worcestershire,  and  on  it  oats  would 
not  grow  properly.  This,  indeed,  had  been  the  general  ex- 
perience on  this  field  with  corn  crops  during  recent  years. 
Lastly,  “ D ” was  from  a field  in  Gloucestershire,  and 
here  grass  would  not  grow  properly,  and  the  herbage  was  poor 
and  wiry,  containing  little  or  no  clover. 
2.  Waters. 
(a)  Water  attacking  galvanised  iron  pipes. 
(b)  Water  with  excessive  nitrates. 
The  analyses  of  samples  such  as  the  above  were  : — 
A B 
Gms.  per  gal.  Grns.  per  gal. 
Total  solid  residue  . 
16^52 
106^40 
Oxidisable  organic  matter  . 
■40 
■60 
Nitric  acid  . 
none 
40^60 
Chlorine  .... 
3^04 
2^64 
Equal  to  chloride  of  sodium 
5^01 
4^34 
Free  ammonia .... 
trace 
■001 
Albuminoid  ammonia 
■003 
■005 
In  the  first  case  the  water  came  from  the  edge  of  the 
Bagshot  sands  and  the  Reading  beds.  Galvanised  iron  pipes 
used  for  conveying  the  water  were  found  to  be  rapidly 
attacked,  and  symptoms  as  of  poisoning  were  produced  in  those 
