VOLUMES ONE TO SIXTEEN. 



39 



best for the auimal, uitrogenous for the 

 quality of the manure, 475 ; as the 

 animal fattens his demand for nitro- 

 genous food decreases, and for non- 

 nitrogenous increases, 478 ; this justi- 

 fies the practice of decreasing the 

 supply of peas and beans, and increas- 

 ing that of barley-meal to the fatting 

 pig, 478 ; experiments with barley- 

 meal, .482 ; barley-meal and mixtures 

 of beans, lentils, bran, and their meals, 

 482, 483 ; experiments with Indian 

 and barley meals, bran, and codfish, 

 486 ; increase in live weight about one- 

 fifth or one-sixth of the food thus con- 

 sumed, 49 1 ; decrease in the rate of 

 consumption of food to a given weight 

 of animal as it fattens, 497 ; analysis 

 of food consumed, 499 ; comparison of 

 the weight of the constituents of the 

 food consumed with the increased 

 weight of the pigs, 500 ; tlie weekly 

 consumption of food by the pig?, 506 ; 

 the leguminous seeds generally contain 

 twice as much of nitrogenous com- 

 pounds as the cereal grains, 535. 



Food of live stock, on diminishing the 

 amount of roots used in fattening cattle, 

 by C. Lawrence, xv. 488. 



, experiments on the comparative 



fattening qualities of different breeds, 

 by J. B. Lawes, xvi. 45 ; Leicester 

 and cross-breds, ib. ; the food, oil-cake 

 and clover-chaff, with Swedish turnips, 

 47; increase of the Leicestcrs, 49 ; of 

 the cross-breds, 50 ; the food consumed, 

 53 ; average weekly increase, 55 ; 

 average wool per head, 58, 60 ; pro- 

 duce of sale of, 65 ; general results, 

 71 ; general summary of experiments 

 with the Hampshire and Sussex Downs, 

 Cotswolds, Leicesters, cross - bred 

 wethers, and cross-bred ewes, 73 ; as 

 to live weight, <'». ; as to wool, rt. ; 

 average prices of meat and wool, 81 ; 

 long-wooiled sheep, especially the Cots- 

 wolds, give more gross increase for a 

 given amount of food than the Downs 

 or crosses, 85 ; enumeration of useful 

 and i)ractical facts relating to sheep- 

 feeding, 86. 



, on feeding cattle on turnips raised 



with different manures, by A. Temple- 

 ton, xvi. 163. 



, intlueiice of careful and regular 



feeding upon the growth of wool, by 

 J. Wilson, xvi. -241). 



Foon of plants, on the, by Dr. George 

 Fownes, prize essay, iv. 498. The 

 origin and composition of soils, ih. ; 

 origin of clay soils, 490 ; analysis of 

 the clay employed in the Sevres porce- 



FOOD. 



lain works, 500 ; calcareous soils, 

 origin of, ih ; limestone soils, 501 ; 

 sand, ib. ; humus of soils, 502 ; the 

 composition of heat, 503 ; the sugar, 

 starch, gum, and lignia, or woody fibre 

 found in plants, 504 ; malting barley, 

 chemical effect of, 505 ; dextrine, ib. ; 

 vegetable acids, 506 ; oily and resinous 

 principles, 507 ; azotised principles, 

 albuminous matters, ib. ; the food of 

 plants, 509 ; the atmosphere, ib. ; the 

 carbon of plants, 510. 



Food of plants, the experiments of 

 Priestley, iv. 510 ; of A. de Candolle, 

 511 ; of Dr. Gilly, ib. ■ of T. de 

 Saussure, ib. ; water-plants, how light 

 acts upon, 513 ; this action peculiar to 

 the green part of plants, ib. ; it ceases on 

 the withdrawal of light, ib. ; wetted saw- 

 dust placed in oxygen gas, effect of, 515. 



, Dr. Daubeny's experiments on 



the evolution of carbonic aciH gas by 

 plants, iv. 515; supply of carbonic 

 acid gas, quantity produced by animals, 

 and b}' the inhabitants of a town, 517 ; 

 quantity emitted by a volcano, 518 ; 

 the amount of carbonic acid gas in the 

 atmosphere, ib. ; hydrogen, how de- 

 rived, ib. ; nitrogen of wild plants, 

 how obtained, ib. ; Boussingault's ex- 

 periments upon the origin of nitrogen 

 in the plants of the farm, 519 ; Liebig's 

 opinion of its origin, 520 ; the use of 

 animal manures, such as putrid urine, 

 SiC, 521 ; the proportion of nitrogen in 

 a soil in Alsace, 522 ; amount of am- 

 monia in rain-water, ib. ; the mineral 

 constituents of plants, 523 ; these not 

 accidentally present in plants, ih. • sili- 

 ceous matters in plants, 524 ; the 

 newly enclosed lands of America, ih. ; 

 the effect of growing tobacco exhaust- 

 ing the soil of saltpetre, ib. 



, analysis of the ashes of wheat-straw, 



iv. 525 ; of seed-wheat, 526 ; of straw 

 and wheat from Berkshire, ih. ; ma- 

 nured with farm manure, 3^7 ; ditto 

 manured with nitrate of soda, •''. 



, analysis of barlev-straw and grain 



grown in Battersea Fields, iv. 529. 



, analysis of rye-straw and grain, i\. 



52'J. 



, analysis of common oats, straw and 



grain, iv. 530. 



, on the origin of the silica in plants, 



iv. 531. 



in lucern, iv. 532. 



^— in white clover, iv. 532. 



in potatoes, iv. 532. 



in turnips, iv. 532. 



in Swedish turnips, iv. 534. 



the action of manures, iv. 535. 



