144 EOYAL HOETICXTLTURAL SOCIETY. 
JPlantago lanceolata. 
1 
J.. 
o 

Q 
O. 
0. 
o. 
1870. 
April 25 
e 
a 
h 
d 
0 
/ 
May 2 
e 
a 
G 
d 
h 
/ 
„ 9 
h 
a 
C 
e 
d 
/ 
16 
c 
a 
h 
e 
d 
/ 
„ 23 
c 
a 
h 
e 
d 
/ 
» 30 
c 
a 
h 
e 
d 
/ 
c 
a 
h 
f 
d 
e 
» 
c 
a 
h 
e 
J 
„ 20 
d 
a 
h 
c 
e 
f 
27 
e 
c 
a 
h 
d 
f 
J 
Cut on June 28. 
Not yet commenced to grow. 
September 5 ... 
Just t 
)eginniri 
g to gr 
ow. 
1871. 
April 22 
a 
Two varieties, much individual vari- 
ation; some 
plants seedlings of last 
year 
„ „ Eoots... 
a 
I 
/ 
d 1 
e 1 
c 
In tlie unmanured box the plants attained a considerably 
higher degree of development than was usual in the other cases 
where no fertilizing agent was employed. 
With the mineral manure, on the contrary, the lowest degree of 
development was throughout maintained. 
With ammonia salts a similarly uniform and low development 
occurred. 
In the case of nitrate of soda a high degree of development 
was secured, greater, on the whole, than with the mineral salts 
and ammonia. 
The mineral and nitrate produced uniformly the highest degree 
of vigour. 
This series affords a striking exemplification of the efiect of 
the combination of the manures, the mineral alone being rela- 
tively useless, and the ammonia salts alone positively less favour- 
