220 
Analyses of the Mineral Ingredients of the Hop. 
Analysis of Peat Ashes from Famham. 
Peat Ashe*. 
Saica ..... 5-50 
Sand ..... 46-10 
Charcoal ..... 16-85 
Lime ..... 5-35 
Magnesia . . . . . -10 
Chloride of Sodium . . . . "40 
Chloride of Potassium . . . ' 'GO 
Sulphuric Acid .... 3-25 
Phosphoric Acid .... '60 
Carbonic Acid .... 2-50 
Oxide of Iron .... 13 50 
Alumina ..... 4-40 
Allen 9915 
The spent hops of the brewer have been proposed as a useful 
manure for hops. Irrespective of their organic matter they will 
also do good from their mineral ingredients. I subjoin an ana- 
lysis of spent hops, from the brewery of Mr. Godden, of Maid- 
stone, Kent. As might have been expected, the chief of the 
potash and other soluble ingredients have been washed away. 
Analysis of the Minebal Ingredients of Spent Hops. — The Spent Hops gave 
10-4 per cent, of Ashes. 
Sand and charcoal .... 21*80 
Silica (soluble sand) .... 27-10 
Chloride of sodium (common salt) . . 2-95 
Chloride of potassium .... 0-70 
Potash ..... 1-45 
Lime ..... -23-70 
Magnesia ..... 275 
Sulphuric acid .... 3-05 
Phosphoric acid . . . .4-10 
Phospliate of iron .... 2-50 
Carbonic acid .... 9-00 
Manganese . . . . .a trace. 
99-10 
The following observations will show the large amount of com- 
mon manures necessary to supply the potash to an acre of hops : — 
The average quantity of potash contained in guano is 3 lb. per 
cwt. 
The straw of wheat contains on an average 5 per cent, of ashes, 
and every 100 lbs. of the ashes contain about 13 lbs. of potash. 
Farm-yard dung contains on an average 7 per cent, of mineral 
ingredients. These contain about 3 J per cent, of potash. 
The following table, which gives us the weights of different 
manures necessary to furnish 17 lbs. of potash to an acre of land, 
will make it probable that the large quantity of potash taken out 
