On Beet-root Pulp. 
155 
We may learn from this that neither the exclusive use of a 
purely mineral phosphatic manure, nor a manure containing, like 
Peruvian guano, an excess of nitrogenous compounds, produces 
the best crops of mangolds on light land. 
6. A moderate amount of an ammoniacal salt, or of nitrate of 
soda, added to a manure composed of available phosphates and 
salts of potash, appeared to be very useful. 
The mixture of 3 cwts. of superphosphate, 2 cvvts. of salts of 
potash, and 1 cwt. of nitrate of soda, it will be seen, produced 
3If tons of mangolds, which, considering the natural poverty of 
the soil, must be considered a very good crop indeed. 
The same mixture, it will also be observed, had a better effect 
than 20 tons of farmyard manure ; for, whilst Plot 9 gave an 
increase of 10 tons over the unmanured plots, 20 tons of rotten 
dung per acre produced only an increase of <i\ tons. 
7. A heavy dressing of dung proved to be less beneficial than 
tl'ie addition of some superphosphate to a moderate dose of dung. 
The best crop, it will be noticed, was obtained by 10 tons of 
rotten dung and \^ cwt. of superphosphate. 
On the whole, the results obtained at Escrick agree well with 
those described in the series of experiments which were tried by 
Mr. Ellis at Tver Moor. Both sets plainly show that potash salts 
are very useful to mangolds, and that, in order to obtain the best 
economic results from their use for this crop, they should be 
mixed with superphosphate and a small quantity of either 
sulphate of ammonia or nitrate of soda. 
1 have repeatedly observed that a small quantity of nitrate of 
soda helps on the mangold plants in a striking manner, provided 
other fertilisers are used at the same time, or the land is in a 
high agricultural condition. The mixture of 3 cwts. of super- 
phosphate, 2 cwts. of salts of potash, and 1 cwt. of nitrate of soda 
per acre, can be recommended, both as an economical and bene- 
ficial artificial mangold manure for light land. 
Laboratory, 11, Salisbury-square, Fleet-street, E.G., 
January, 1870. 
VIII. — On Beet-root Pulp. — By Dr. Augustus Voelcker. 
In manufactories of beet-root sugar the roots, after having been 
topped and tailed, are thoroughly washed with cold water, and then 
passed through a grating machine, driven by steam-power, which 
reduces them to a fine pulp. This pulp, with the addition of a 
