13 An Eyperiment witb Aabaſter, on Potatoes, 5y Mr. Moſton, of Leicefter.

In April I planted potatoes, half of which, as ſoon as cut, were put into powdered alabaſter, conſequently the cut part was covered with it, and then planted in drills, each ſet a foot aſunder; a fmall quantity of alabaſter was ſprinkled upon each ſet beſides. After they were covered with earth, a little more was ſpread along the drills.

The other half was planted in the ſame manner, except without alabaſter; whilſt growing, no difference appeared betwixt them; but on taking them up in November, the potatoes to which the alabaſtar was applied, produced about

one third more, and were larger.(v)

Otber Authorities. EXPERIMENT, No. 1, COMPARING MANURES FOR PFOTATOES. Manure per Acre Crop Buſhels. — 33 Loads(cubical yards) farm-yard dung— 400—

160 Buſhels ſoot 2- 360 160 Ditto wood-aſhes-—— 240 32 Loads of dung-——. 2380 4² Ditto——— 360 No manure-— 5 2 180

EXPERIMENT, No. 2.

— 32 Loads dung, and 40 bufhels of wood-aſhes 400 No manure 8 3 3- 280 160 Buſhels of flacked lime--—- 380 1 ⅞ Ton of barley ſtraw 8—— 300 340 Buſfhels of pot-aſh--—- 380 32 Loads of dung-——— 400 32 Ditto, and 1601b. ſalt added at time of ſpreading 400 32 Ditto, and 160 bufhels lime——- 480 32 Ditto, and 480 gallons of urine—-(¹) 520 Mr. Billingſley not leſs than 20 loads, each 30 bufhels of vwell rotted horſe-dung: limie, marl, chalk, ſoaper's aſhes, and rags, do but little good: hog-dung next to horſe. Green vetches or clover, covered in by planting, is good manurc.(*) At Packenham, in Ireland, graſs-land manured with limeſtone gravel, — will let to the poor at 5l. an acre, for planting.(y)

() Ms. Papers of the Board.(²⁰) Annals, vol. 9. p. 692, the editor. (x) Annals. vol. 21. P. 4.(†) Vol. 1. p. 49.