156 THE AMERICAN GARDENER. [Chap. 



and August) ought to be under the South fence, so 

 as to get as much coolness as possible. 



242. PENNYROYAL.— A medicinal herb. It is 

 perennial. A little patch, a foot square, is enough. 



243. PEPPER. See Capsicum. 



244. PEPPER GRASS. See Cress. 



245. POTATOE.— Every body knows how to 

 cultivate this plant ; and, as to its preservation 

 during winter, if you can ascertain the degree of 

 warmth necessary to keep a haby from perishing, 

 you know precisely the precautions required to pre- 

 serve a potatoe. — As to sorts, they are as numerous 

 as the stones of a pavement in a large city ; but, 

 there is one sort earlier than all others. It is a 

 small, round, white potatoe, that has no blossom, 

 and the leaf of which is of a pale green, very thin, 

 very smooth, and nearly of the shape and size of 

 the inside of a lemon cut asunder longways. This 

 potatoe, if planted with other sorts in the spring, 

 will be ripe six weeks sooner than any other sort 

 I have had two crops of this potatoe ripen on the 

 same ground in the same year, in England, the se- 

 cond crop from potatoes of the first. Two crops 

 could be raised in America with the greatest facili- 

 ty. — But, if you once get this sort, and wish to 

 keep it, you must take care that no other sort grow 

 with it, or near it ; for, potatoes of this kind mix [, 

 the breed more readily than any thing else, though ' 

 they have no bloom I If some plants of this blos- 

 somless kind grow with or near the other kinds, r 

 they will produce plants with a rough leaf, some of i 

 them will even blow, and they will lose their quali- [ 

 ty of earliness. This is quite enough to prove the 3 

 fallacy of the doctrine of a communication of the I 

 farina of the flowers of plants. I 



246. POTATOE (Sweet.)— This plant is culti- t 



