188 INDEX. 



Plants, on the introduction of exotic, 15. 

 Plaster of Paris, used as manure, 223. 



Plough, the swing, 109; wheel, 110; trench, 111; double-furrow, 



ib. ; paring, ib. ; the Rotherham or Yorkshire, 112; with iron 



mould-board, ib. ; made entirely of iron, ib. ; Mr Wilkie's recent 



improvements on, ib. 



uses of the mole, 125, 192 ; use of the common, in making 



drains, 192; the common, how used for paring, 240. 

 Ploughed ground, quantity of, according to the different breadth of 

 the furrow-slices and rates of horses' walking, exhibited in tables, 

 305. 



Ploughing, the best mode of, by a swing plough, 298 ; table of, 299 ; 

 maxims respecting the proper depth of, ib. ; deep, when proper, 

 300 ; deep, when not to be recommended, 301 ; advantages of 

 deep, ib. ; preparation for deep, 302 ; manner of laying the furrow- 

 slice in, ib. ; seasons for, 303 ; hours of working when, 304 ; ex- 

 tent of, done in a day, ib. ; table of the quantity done in different 

 circumstances, 305 ; expense of, 306 ; cross, 307 ; trench, 308. 



matches, 308. 



Ploughmen, plan of maintaining them in Scotland, 71. 



Pluviameter, or rain-guage, 16. 



Poa, different species of, recommended for pastures, Add. 87, 88, 90, 



91. 



Porous subsoil, uniform advantage of a, 35. 

 Portable furnaces for burning sods, 241. 

 Poor, assessment for, should be regulated, 61 ; ill effects of payments 



to, ib. ; in Scotland maintained by voluntary contributions, ib. 

 rates, daily augmentation of, 61 ; paid by tenants, how justi- 

 fied, ib. ; ought to be alleviated, 508. 

 Ponds, artificial, how formed, 139, App. 42. 

 Positions, maritime, or inland, effects of, 13. 



Potatoes, Mr Knight's method of raising, App. 12 ; used for feeding 

 horses and other cattle, 1 06 ; manuring in drills used in the culture 

 of, 198 ; horse dung may be used fresh for, 204 ; advantages of, 

 440. 



Pounded limestone, used as manure, 220. 

 Prevailing winds, their influence, 12. 

 Preserving corn and flour, 361. 

 Private fruit-gardens, 443 ; kitchen gardens, ib. 



roads, advantages of good, the making of by the tenant, how 



to be encouraged, 147 ; advantage of broad cylindrical wheels on, 

 ib. 

 Produce, proportion of, payable as rent, a difficult question, 55. 



disposable, of a nation, a principal source of its prosperity, 500. 



expense and surplus of farms, general statements of, App. 



25, 26. 



of orchards, 456, 459 ; of woodlands, 469. 



Production of crops, operations of husbandry in the, 296. 

 Professions, distinct, viz. the dairy, the breeding, and fattening of stock, 

 highly beneficial to the country at large, 39 ; divisions of, an im- 

 portant link in the progress of agricultural improvement, ib. 



