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feveral other refpects. A necefiary fet of experi- 

 ments therefore would be a comparative trial, in 

 equal circumftarrces, of all the different kinds, with 

 a view to afcertain the weight of produce that could 

 thus be obtained from each. 



The only experiment under this head I ever 

 made, was the following : 



Experiment Ninth. 



At the fame time that the potatoes in experiment 2d 

 were planted, I made choice of twenty plants of a different 

 kind of potatoe, that is ufually diftinguifhed in Aberdeen- 

 fhire by the name of the Dutch clujier potatoe. The bulbs 

 of this kind are of an irregular roundifh knobby form. 

 The colour of the fkin a yellowifh white, with a faint pinkifh 

 tinge about the eyes, efpecially before it is quite ripe. The 

 colour of the pulp yellowifh white — confiftence vifcid, not 

 meally: tafte fweetifh. The eyes are pretty deeply funk 

 in the bulb. The ftalk and leaves are neither folong, nor 

 fo dark in the colour, as moft other kinds ; but are gene- 

 rally numerous, more erect:, and lefs jointed. BlofToms 

 white, with a pale pink-or purplifh tinge, numerous and 

 large. Thefe are fucceeded by apples, which in this kind 

 are generally abundant, and of a large fize. The umbili- 

 cal fibres do not in this kind fpread to any confiderablc 

 diftance from the ftem, fo that the bulbs are ufually found 

 in a clufter clofe to the root, to which they firmly adhere. 

 It is reckoned a great bearer. — Thefe are the principal 

 characteriftics that at prefent occur to me for diftinguifh- 

 ing this kind, which I only do from memory. 



Twenty whole potatoes of this kind, which weighed 

 exactly 123 ounces, were planted in a row immediately 



contiguous 



