140 



Analyses of Ashes of Plants, 



TURNIPS. 



Specimkn No. 76. — Laing's Self-preserver Swede. 



From Mr. Arkell. 



[/S'o?7, brashy ; subsoil^ stone ; geological formation^ the forest marble ; 

 undrained. After wheat. Manured for the Swedes with 3 cwt. of 

 Peruvian guano, 1 cwt. of superphosphate of lime, and 20 bushels of 

 ashes. Drilled on the flat at 21 inches, June 17, 1846. Appear- 

 ance of the crop fair. Collected in November.] 



Estimated produce in bulbs, 12 tons. 



J, „ in tops, 1 ton 16 cwt.* 



Per centage of water and ash : — 



Water. 



Bulbs . . . 87-7 

 Tops ... 86-0 



Mineral matter on an acre : — 



Bulbs . . 

 Tops . . 



287 



Ash 



Ash calculated 

 on drj' substance. 

 79 . . 6-40 

 88 . . 13-40 



211 lbs. 



76 



Specimen No. 77. — Skirving's Swede. 



From Mr, Guppy, Bradninch, Devon.^ 



[/Sb?7, a rich loam of moderate consistence ; subsoil, a compact mixture 

 of clay and sand to a great depth, ^(f^^drained but naturally dry. 

 Previous crop, 30 bushels of wheat ; turnips manured with a com- 

 post of 15 cart-loads of farm-yard manure and 10 loads of highway 

 soil, and with 25 bushels of lime, and about 8 bushels of a mixture 

 of soot, night-soil, and wood-ashes, drilled with the seed. Planted 

 June 30, 1846. Collected Nov. 26. 



Produce in bulbs, about 28 tons. 



in tops, 3 tons 2 cwt. 



Per centage of water and ash 



Water. 



Bulbs . . .87-9 

 Tops . . . 85-8 



Mineral matter on an acre : — • 



Bulbs 550 lbs. 



Tops 76 



626J 



Ash. 



Ash calculated 

 on dry substance. 

 •88 . . 7-30 

 1-61 . . 11'30 



* For some remarks on the estimation of the proportion of bulb to top, see p. 168. 

 \ Grown by Mr. Alexander Read, of Worth Farm, Silverton. 



% From this amount we have to deduct the carbonic acid, which (whatever may be 



