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foregoing experiment clearly demoſtrates:at the Froſt will cauſe that diſordir, and therefore ought with all carefulneſs to be avoided.

I hope my intentions will plead a ſufficient excuſe for the liberty I have taken in troubling yon with this haſty ſketch. lf it can prove in the ſmalleſt degree ſerviceable, my higheſt wiſhes will be accompliſhed.

I am, HONOVRABLE sIk,

Vour moſt humble and moſt obedient ſervant, Warrington, Lancaſhire,

loth Auguſt, 1794. W. WOoODCOCk.

*

No. VIII. Hints hy A2r. Holt of IYaltan.

THE varieties of potatoes are almoſt endleſs, new kinds being raiſed every year from ſeed; but thexe is one remarkable property attending the new raiſed kinds, viz. That for a few yeats after being raiſed from the ſeed they do not ufually bloſlom. After ſome time(which depends upon the quality of the potatoe) they put forth flowers which produce fruit, from which the ſeed is colſected; and all the varieties of the potatoe are raiſed from ſeeds thus collected ſa). This property ſeems to hint the neceſſity of frequently raiſing potatoes from ſeed; for if continued too long, they be- come liable to diſeaſe(ſuch as the curl,&c.) and produce but a little crop: change of land will however prevent his for many years; for which reaſon the ſame plants are ſeldom uſed upon the ſame ſort of land more than twice, or three times at the fartheſt. 1f there ever appears the leaſt ſymptom of diſeaſe, the ſets are diſcarded, and freſh ones procured from potatoes that have been planted upon a different ſoil; e. g. from barren to rich, from clay to ſand-lands(b). The coarſer the potatoe, the leſs liable to diſeaſe; it will ſtand longer upon the ſame lands without change, and without renewing the ſeed. The Manly and Pink-He are both delicate potatoes, and ofexcellent

ſa) The Cbampion potatoe being ſent into the ſouth, puts forth bloſſoms ſome years earlier than the ftock from which it deſcended did in Lancafhire.

(é] Sets from moſs-lands are in high eſteem, Particularly for dry ſandy ground.