134 
Liquid Manure. 
share in preserving the root. Should it be found that mangolds 
manured with salt keep much better than roots without salt, 
additional inducement is offered to the farmer not to stint his 
mano^old in salt. This leads me in conclusion to express the 
opinion that the character of the manures which are used for 
mangolds has a material influence on their composition, which 
no doubt must affect likewise their keeping qualities. 
In the absence of precise information and experiments, I abstain 
from further speculating on this subject, and allude to it here mainly 
for the purpose of showing how desirable it is that the whole 
question should be thoroughly investigated. This, I believe, can 
only be done properly by a systematic series of practical and 
analytical experiments. 
Boyal Agricultural College, Cirencester. 
XI. — On the Changes which Liquid Manure undergoes in contact 
with different Soils of known composition. By Dr. Augustus 
VOELCKER. 
In a paper ' On Farmyard Manure and the Drainings of Dung- 
heaps,' published in vol. xviii., of this Journal, I communicated 
the results of two experiments, which showed that drainings 
from dung-heaps, in passing through soils of known composi- 
tion, undergo a series of remarkable and important changes. 
Since the publication of this paper I have been actively en- 
gaged in following up this interesting inquiry ; and, at the 
request of the Council of the Royal Agricultural Society, have 
now the pleasure of laying before the readers of the Journal the 
results of my recent researches on the subject. 
The liquid manure employed in the following four experiments 
contained in an imperial gallon: — ^^^^^ 
Ammonia (iu the state of carbonate and humate 
of ammonia) 35"58 
Organic matters 20'59 
Containing r49 of nitrogen. 
Equal to 1'81 of ammonia. 
Inorganic matters (ash) 91*27 
Consisting of : — 
Soluble siHca 2*34 
Lime 11-48 
Magnesia 2'87 
Potash 16-92 
Chloride of potassium 2'74 
Chloride of sodium 40-35 
rhosphoric acid 4"83 
Sulphuric acid ^'94 
Carbonic acid and loss J>'80 
147-44 
