INDEX. 



Plough, ploughing, in ridges, with deep furrows between 

 them, recommended, [no doubt, for 

 ^ wet, heavy, and flat lands,] - 197 



Posts, most durable when natural position reversed, - 412 



and see appendix, - ■ - - 120 



Potash, quantity produced respectively by ashes of sundry 



species of timber, - - - 417,418 



Potatoes, not profitable to cultivate, when combined with 



wheat crop, sown in the same season, appendix, 54 



and see Arthur Young's letter on the potatoe, 

 as cultivated in England, appendix, - 55, &c. 



planted on the sides of young hedge rows, advan- 

 tageous, ... - 385,409 

 Pruning, hedges, appendix, . „ - . 

 orchards, observations on, - - - 

 Ptyalism, running of saliva from horses, observations on, 

 Putrefaction, plaster promotes, - . - 

 Pyracantha, or evergreen thorn, appendix. 

 Pyrites, burnt, become mamire, _ - - 



Q 



Quincy, Josiah, Esq. account of his stercorary, 

 his hedges, 

 and see page 385, extract from Mar- 

 shall's economy of Yorkshire. 

 R 

 Radish seed, sown with turnip, guards against the turnip 



fly, - - - - at the end. 



Rake, horse rake of Long Island, with a cut, - 212, 213 



Rennet, and alkalies combine with curds ; acids and spi- 

 rituous liquors mix with whey, of milk and cream, 249 

 Ridges, old and reprobated mode of laying down grounds, 1 60 



iiy only fit for dead flats and wet clays. 

 Roads, and face of the country in sundry parts of Pennsyl- 



vaniaj described, ... - 100 



and internal navigation, - - - 270, &c. 



Appendix, - - - 59 to 77 



