Analyses of the Mineral Ingredients of the Hop. 215 
The Yellow Grape Hop. 
The grape hop is of a different species to the Golcling, and 
generally produces a greater amount of crop per acre. These 
hops were sent by Mr. Kipping of Hadlow, Kent, and were 
grown on the weald clay, on a soil manured almost to the fullest 
extent that the land would bear. Occasionally from 25 cwt. to 
30 cwt. per acre of hops have been grown on the same land. 
The following analyses were performed, at my own request, in 
our laboratory, by my pupil Mr. James Allen of Howberry, near 
Dartford, Kent. 
The hops were picked in September, 1845. They weighed 
4 lb. 2 oz. ; the leaves 14^ oz. ; and the bine 2 lbs. 12oz. 
Analysis of the Ashes of the Grape Hop. 
The 4 lbs. 2 oz. of hops, when dried at a steam heat, lost nearly 
11^ oz. of moisture and left 31b. 6^ oz. of dry hops. 
The dry hops burned to ashes furnished 4649 grs., being at the 
rate of 19 4 per cent. 
These ashes on analysis gave as follows : — 
Silica (or pure sand) ..... 20*40 
Chloride of Sodium (coinnion salt) . . . 2'60 
Chloride of Potassium .... 1-80 
Potash . . ... . . 15-20 
Lime ...... 1940 
Magnesia ...... 6'00 
Sulphuric Acid (oil of vitriol) . . . 3'40 
Phosphoric Acid ..... 4'30 
Phosphate of Iron ..... 5 55 
Carbonic Acid ..... 2'75 
Manganese . . . . . . 1-.30 
Sand and Charcoal ..... 16-40 
Loss* ...... 1-9 
Analysis of the Grape Hop, with the Sand, Charcoal, and loss deducted. 
Centage of Ash, 15-8. 
Per 
Silica (or pure sand) 
Chloride of Sodium (common salt) 
Chloride of Potassium 
Potash 
Lime 
Magnesia 
Sulphuric Acid (oil of vitriol) 
Phosphoric Acid 
Phosphate of Iron . 
Carbonic Acid . . 
Manganese 
24 -P6 
3- 18 
2- 21 
18-61 
23-75 
6-13 
4- 16 
5- 26 
6- 79 
3- S6 
1-59 
* Fluorine was detected in the ashes of both samples of the hop 
J. C. N. r 1 
