Analyses of Ashes of Plants. 



157 



MANGOLD-WUllZEL. 



Specimen No. 106. — Yellow Globe Mangold-Wurzel. 



From the Rev. A. Huxtahle. 



\Soil^ six inches of reddish mould, containing some clay ; subsoil, chalk ; 

 geological formation, tlie upper chalk ; does not need draining ; o 

 years in tillage. Previous crop 20 tons of Swedes ; land manured for 

 the mangold with ten bushels of pure dung of fatting beasts nnfer- 

 mented, mixed with 1 cwt. of bones, and J cwt. sulphuric acid (these, of 

 course, separately mixed previously), and 10 bushels of ashes. Dibbled 

 early in May (the manure being also dibbled) ; the tops blighted a 

 good deal, and half the crown of the roots blackened with the blight. 

 Collected in November.] 



Produce, in roots, 22 tons. 



„ in tops, 3 tons 17 cwt.* 



Per centage of water and ash :- 



Water. 



Ash, 



Roots 

 Tops 



91-0 

 90-0 



Ash calculated 

 on dry substance. 



11 -32 



u-oo 



Mineral matter on an acre ; — 



Bulbs . , 

 Tops 



502 lbs. 

 121 



623 



Analysis of the ash of the bulb : — 



In 100 pait^. 



Silica . 2-22 



Phosphoric Acid 4*49 



Sulphuric Acid 3-68 



Carbonic Acid 18-14 



Lime 1-78 



Magnesia 1 • 75 



Peroxide of Iron 0 • 74 



Potash 23-54 



Soda 19-08 



Chloride of Sodium . . . . 24-54 



Chloride of Potassium . . . none. 



Total 99-96 



Mineral matter removed 

 in an Acre of Crop. 

 IM 

 22-5 

 18-5 

 91-0 

 8-9 

 8-8 

 3-7 

 118-2 

 95-7 

 123-3 

 none. 



501-7 



* The produce in tops, according to Mr. Huxtable, is five tons, instead of that men- 

 tioned in the text. In all likelihood Mr. Huxtable's is the more correct number, but 

 Laving given in the other instances (where we had no practical estimate of the quantity 

 of top) the relation as actually found in the specimen forwarded to us, we have thouglit 

 it better, for the sake of uniformity, to abide by the same method in the present case. 



