[ 9 ] 



to render all thefe rows as much alike each other as pof- 

 fible in all refpe&s. The four experimental rows confided 

 of plants of the following kinds : 



I ft row. Small potatoes planted whole. 



2d. Potatoes fomewhat larger than the former, cut into 

 two equal parts, 



$d. Pieces cut from the fmall end of large potatoes, 

 with one eye in each. 



4/£. Pieces cut from the large end of the fame potatoe, 

 with one eye in each. 



To underftand the meaning of the laft part of the expe- 

 riment, it is neceflary to obferve, that the kind of potatoe 

 ufed in this experiment (and in all the other experiments 

 in this eflay, where not othcrwife related) was that com- 

 monly known here by the name of the white kidney potatoe. 

 The bulbs of this kind of potatoe are ufually of an oblong 

 fhape, flatted a little, having one end confiderably fmaller 

 than the other : the colour yellowifh white, without any 

 tinge of rednefs. The fmall end of this potatoe, which 

 is always oppofite to the umbilical eye, by which* it ad- 

 heres to the ftem, is ufually filled with a clufter of bud- 

 eyes, very clofe upon one another ; fo that the flices taken 

 from this end, with a fmgle eye in each, are of neceffity 

 very fmall ; whereas thofe that are cut from the oppofite 

 end, in which the eyes are placed much thinner, are al- 

 ways of a much larger fize, 



Thefe potatoes were properly hoed, and kept free from 

 weeds during the fummer, and on the 30th of O&ober 

 they were dug up, and, after being properly cleaned, the 



weight 



