ANALYTICAL INDEX. 



135 



Pear tree, Endicott, concerning the, 1850, 

 27, 43; 1852, 711. 



— trees, diseases of, 1846, 42; 1847, 81. 



fruit from, gathering of, 1847, 82. 



soil for, 1847, 79, 138. 



stocks for, 1847, 77. 



transplanting of, and treatment, 1847, 



79, 81. 



Pears, varieties of, characteristics of dif- 

 ferent, 1847, 83, 138, 147; 1848, 40, 256; 

 1850, 29, 38; 1851, 233; 1852, 52, 103, 

 107. 



Peat as a basis for compost manure, 1845, 

 20. 



— as a manure, 1849, 373; 1851, 254. 



— for fuel, use and value of, 1849, 151. 

 Peck's pleasant apple, characteristics of 



the, 1852, 50. 

 Pedigrees of animals, concerning, 1851, 



12. 

 Perry, G. B , essay by, on the cultivation 



of the oak and other forest trees, 1847, 



64. 



report by, on grape culture, 1851, 70. 



Phinney, E., reports by, on the stock of 



the Massachusetts Society for Promoting 



Agriculture, 1845, 183 ; 1846, 6 ; 1847, 2 ; 



1848, 2. 

 Phosphoric acid as plant food, 1849, 382. 

 Physical cultivation, concerning, 1851, 



554. 

 Pigs, feeding and management of, 1846, 



24; 1851, 322; 1852, 334. 

 Pine plains, cultivating of, to a profit, 



1845, 79. 



— tree worm, ravages by the, 1846, 153. 



— trees, concerning the planting and 

 growth of, 1845, 97; 1846, 153; 1852, 

 492, 550. 



— white, gathering the seeds of the, 1845, 

 96; 1846, 152. 



Plant food, amount of, removed from the 

 soil by crops, 1850, 451. 



— growth, electricity in, 1846, 35. 

 Planters, corn and seed, concerning, 



1850, 241. 

 Plants, absorption by, 1852, 658. 



— adaptation of, 1845, 164. 



— analysis of various parts and products 

 of, 1845, 165. 



— carbon of, 1845, 161 ; 1850, 460. 



— chlorophyll of, 1845, 164. 



— digestion in, 1852, 658. 



— food of, 1845, 161 ; 1849, 382 ; 1852, 624. 



— inorganic matter of, 1845, 163. 



— internal structure of, 1845, 160. 



— power of, to gather food, 1846, 36 ; 1849, 

 392; 1852, 585. 



Plants, respiration in, 1852, 65S. 



— roots of, depth penetrated by, 1851, 

 264. 



— sap in, functions of, 1852, 657. 

 Plaster as a manure, 1846, 123, 125. 



— as an absorbent, 1848, 249. 

 Plough, Bartlett's patent double, concern- 

 in- the, 1849, 27; 1851, 101. 



— cast-iron, use of the, 1850, 239 ; 1852, 

 251. 



— clevis on the, arrangement of the, 1846, 

 69. 



— development of the, 1846, 113. 



— importance and use of the, 1845, 89; 

 1847, 154, 211 ; 1848, 36 ; 1849, 227, 258 ; 

 1850, 239 ; 1851, 129 ; 1852, 124, 282, 374. 



Ploughing, depth of, 1849, 27, 336; 1851, 

 495; 1852, 283, 468. 



— furrow slice in, concerning the, 1849, 28, 

 122; 1851,493; 1852, 25U467. 



— match, report on a (Oliver Wendell 

 Holmes), 1849, 258. 



— matches, accounts of various, 1845, 46, 

 89, 120, 123 ; 1846, 63, 95, 113 ; 1847, 102, 

 154,168; 1848,37,52; 1849,178,258,271; 



1850, 146; 1851, 128, 169, 239, 285, 296, 

 461 ; 1852, 124. 



— report on (John W. Proctor), 1851, 492. 



— reports of committees on, 1845, 47, 65; 

 1846, 92, 142; 1847, 17, 134; 1848, 31, 

 36, 160; 1849, 26, 224, 267, 278, 317, 

 335; 1850,218,273,340; 1851,128,263, 

 317, 492; 1852, 222, 249, 282, 340, 373, 

 508. 



— subsoil, advantages of, 1845, 7, 102, 

 112; 1846,130; 1847,17; 1848,68,112; 

 1849, 27, 121; 1850, 67; 1851, 248, 263, 

 317, 364, 497; 1852, 250, 284, 386, 472, 

 499, 600, 755. 



and thorough draining (B.V. French), 



1852, 740. 

 influence of, on the corn crop, 1845, 



102, 112; 1846, 139; 1849, 121; 1852, 



499, 754. 



— the principles of (Sanford Howard), 

 1852, 462. 



— with various kinds of teams, 1845, 6, 10 ; 

 1846, 13; 1848, 24, 155; 1849, 167, 278; 



1851, 373; 1852, 27, 120, 389, 513. 

 Ploughman, lines to the (Oliver Wendell 



Holmes), 1849,200. 

 Ploughs, kinds of, characteristics of dif- 

 ferent, 1845, 7; 1846, 13, 68; 1849, 27, 

 227; 1851,100,248,317,444,465; 1852, 

 31, 35, 251,285,472, 693. 



— self- sharpening and adjusting steel- 

 pointed, construction of, 1846, 69. 



— side-hill, use of, 1850, 67; 1851, 496. ■ 



