XVI h 



grafting ; whip or splice-grafting ; crown or rind -grafting ; bark-grafting ; 

 budding; layering; inarching; cuttings; gootee or gul-kalam ; pruning; 

 root-pruning. -PP. 479 to 485. 



Chapter LXXXI. India-rubber and Guttapercha, Demand ; price ; 

 para-rubber; ceara-rubber ; ule-tree rubber; Indian rubber; how collected; 

 strained and coagulated ; a Chinese rubber-yielding fruit , pp. 48510 489. 



Chapter LXXXII. The Bamboo. Varieties ; propagation ; manuring ; 

 out-turn. p. 490, 



Chapter LXXXlll. Oranges. Varieties ; climatic requirements ; seed- 

 bed ; transplanting ; hoeing and mulching ; the seedless orange of Call, 

 fornia. pp. 490 to 492, 



Chapter LXXXIV, Lac. Trees on which it grows best ; inoculation,- 

 its proper season ; ants to be guarded against; life-history of the lac insect ; 

 manufacture of seed-lac, shell -lac and lac dye ; cost of growing lac on Grewia 

 trees estimated. pp. 493 10497, 



Chapter LXXXV. Agricultural Calendar for Lower Bengal, 

 Operations done during different months ; sowing and harvesting of various 

 crops shown month by month. pp. 497 to 501, 



Part IV.-MANURES. 



Chapter LXXXVI. General summary. Law of minimum explained; 

 growing of leguminous crops in rotation cannot supply the place of manuring; 

 classification of manures; effects of nitrogenous, phosphatic, potassic and 

 calcareous manures ; use of salt; indirect manuring; economical method of 

 applying manure ; covered pit ; liquid manure. pp. 502 to 508. 



Chapter LXXXVII. Exhaustion, Recuperation and Absorption. 

 Professor Wallace's dictum supported; available phosphoric acid and potash; 

 how waste of nitrates avoided ; absorptive power of soils explained by an ex- 

 periment ; physical absorption, absorption without exchange of bases, absorp- 

 tion with exchange of bases. pp. 508 to 516. 



Chapter LXXXVIII. Nitrogenous Manures. Nitrogen as nitrates of 

 highest value ; fungi utilising free N of the air; bacteria accumulating albumi- 

 noid matter at root-nodules; Nitrites useless as plant-food; sewage-water, 

 therefore, not of great value for irrigation ; Nitrates in nature (as sodium, 

 potassium and calcium nitrates) ammonium sulphate, a product of gas-works; 

 crude gas-liquor to be diluted, if applied ; urea also absorbed by plants ; loss 

 of nitrates by drainage may be more than made up by nitrification ; conditions 

 suitable for nitrification ; nitrous earth ; nitre-beds; manufacture of saltpetre ; 

 application of nitrates ; Bhadai and early Rabi crops chiefly benefited ; legumi- 

 nous crops injured ; compost heaps ; antiseptics and putrefaction retard nitri- 

 fication of farm-yard manure ; calcium carbonate or gypsum to be used, not 

 caustic lime ; conservation of manure; reduction of nitrates into nitrites and 

 free N in swamps; origin of nitrates in soil ; nitrification of urine; export 

 of saltpetre ; value of N as compared to those of P...O. and K.,O ; causes of 



