INDEX, 



P 



Peters, Richard, on gypsum, _ - - - 156, SlO 



on thickness, cement and materials 



of walls, - - - 197 



on orchards, - - - - 211 

 on coarse flour, bro-\vn bread, and the 



force of habit,as it relates to esculents, 227 

 on new herbs and shrubs appearing, 



after firing woods, - - - 237 



on trench ploughing, - - 240 



on hemlock, for live fences, - 249 



remarks on, and plan of, a stercorary, 281 

 on changes of timber and plants. Races 



of animals extinct, _ - _ 296 

 on gj^psum, whether it is found in the 



United States ? - - - - 310 



Pise walls, remarks on, - - - - 205 

 Pits and dung holes prevent fermentation. Receptacles 



for muck under stables and barns censured, 153 



Planting, shallow, best for fruit trees, - - - 212 

 Plants, tendency in nature to change them in succes- 

 sions on the same soil, - - - 27 to 46 



Plashing hedges, mode of, with a cut, appendix, - 25-6 



Plough, coulter, described, - - - 91 



shovel, described, - - - - 98 



three furrow, described, - - - 237 



Ploughing, new mode of, described, - - - 87 

 often, deep and at proper times recommended, 100 



in fresh dung improper for wheat, - 284 

 trench. Facts relating to it, and descrip- 

 tion of, - - - 240-1-2-3-4-5-6 



Prison of Philadelphia, remarks on, - - 199 



Pruning, Bucknal's mode as to branches and roots, 216 



Pummice press, a new one described, - - 109 

 Pyrites, fertilizing effects of, when burnt, on grass 



Appendix, - 33 



