POTATOES, 88, 99. ESCULENT ROOTS--POTATOES, chap. xxix, 170; their productiveness, 170; cultivated universally in Europe, 170; they alone form part of the every-day food of prince and peasant, 170; the poor of New England depended on them when the grain crop was cut short, 171; formed part of the regular supper in farmers' homes, 171; the history of the Potato, 171; it is essentially a mountainous plant, 172; it may have grown wild on the sides of the great chain traversing Spanish America, 172; everything there congenial to it, 172; results attained by the author in growing potatoes, 172; conditions which insure a good crop, 172-3; swamp muck treated as described, makes an excellent fertilizer for, 173; how to act where such is not to be had, 173-4; instructions to a farmer having a poor, worn-out field of sandy loam, 174; objections thereto considered, 174-5; the potato blights, 175-6; the kind of seed to plant, 176; drills are preferable, in the author's judgment, 176-7; preparation of the soil, 177; varieties considered, 177; growing from tubers tends to degeneracy, 177; the originator of a valuable new potato entitled to a recompense, 177; also, 189, 264, 296. POTOMAC river, the, 53, 73, 140, 159; valley of the, 317. PORTUGAL, 237. POWER--UNDEVELOPED SOURCES OF POWER, chap. xlvii, 280; the farmer's sources and command of power less than the manufacturer's, 280; both have the same opportunities, 280; author's experience of the delay and cost of plowing, 281-2; further illustrations of the imperfect means of plowing, 282; steam plowing in England, 282-3-4; steam not commended as a source of power to the farmer, 284; reasons therefor, 284; wind as a source of power, 284-5; the further anticipated sources, 285; the triumphs of the future, 285. PRAIRIE, 24; prairies, the, of the West, 213; the, 261. PRAIRIE STATES, 46, 83. PRUNING, 146. PUBLIC LANDS, 24, 46. PURSLEY, 125. QUINCES. _See_ FRUITS. RAG-WEED, 125. RAILROADS, their influence on the progress of the West, 26, 105; suggestions to have one act as factor of farm products, 301-2. RALEIGH, Sir Walter, 171. "RANCHING," 292. RASPBERRIES, 90. REAPERS, American, 245. RED CEDAR, 58, 157, 223. RED OAK, 19, 53, 60. REPUBLICAN, valleys of the, 274. ROADS, 250. ROBINSON, SOLON, on fencing, 219. ROCK. _See_ STONE. ROCKY MOUNTAINS, 206, 261, 262, 274. ROMFORD, England, 269-70. ROOTS, culture of, 35, 43; all seek heat and moisture, 98, 126, 168, 206, 228, 242, 265; FERTILIZERS, COMMERCIAL; also 109, 114, 122, 127, 128, 143, 147, 174. SALT LAKE, 46. SALT LAKE CITY, 112. SAVOYS, 271. SCHOOLS, 249, 250.