VOLUMES ONE TO TWENTY-FIVE, 



155 



breatliiug pores, Ih. ; tlio carrot, its 

 structure, 476, and root illusti-ated, 477 ; 

 fleshy roots belong to annuals or 

 biennials, 488 ; formation of new roots, 

 ih.; the dalilia, 479; the onion, ih.; 

 perennial monocotyledons form bulbs 

 or tubers as store-i'oots, ih. ; the barley 

 plant, illustration, 480 ; aerial roots, 

 381 ; anatomical stiiicture of roots, ih. ; 

 magnified sections of roots, 4823 ; the 

 cortical region, 482 ; cambial tissue, 

 483 ; fibrils, ih. ; the central cord, 484 ; 

 the apes, 485 ; relation of stem to root 

 in dicotyledonous roots, ih. ; medullary 

 rays, ib. ; section of a young turnip, 

 468 ; monocotyledons, mode of their 

 development at the apex, illustrated by 

 perpendicular slice of the rootlet of the 

 onion, 487; i^rotaplasm abundant at 

 the top, 488 ; section of onion-root, ih. 



Roots, agricultiual, theu' development and 

 action at various stages of growth (Rev. 

 M. J. Berkeley), xxiv. 419; Liebig on 

 plant food, 420 ; his ' Natural Laws of 

 Husbandry,' ih. ; the embryo, 42 1 ; 

 germination of cereals, 422 ; influence 

 of temperature, air, and water, ib. ; 

 Prof. Henslow on suspended germina- 

 tion, 423; development of the young 

 radicle, 424 ; importance of sound seed, 

 ib. ; supply of nitrogenous and amyloid 

 matter, 425 ; objection to thin, meagre 

 seed, ih. ; secondary roots, 426 ; earliest 

 stage and growth of roots, ih. ; tissue of 

 spongelets, ih. ; endosmose and exos- 

 mose, 427 ; selection of food by plants, 

 ih. ; ash of the viola ctdaminaria, ih. ; 

 absorbent power of soils, 428 ; Schlei- 

 den's investigations, ih. ; excrementi- 

 tious powers of roots, ih. ; investigations 

 of Cauvet and Dr. Daubeny, 429; ac- 

 tion of poisons on plants, 430 ; elimin- 

 atory power of roots, ih. ; tlieir pene- 

 tration in search of nutriment, 431 ; 

 chlorosis, ih. ; eltect of long rootlets 

 left in tlie soil, ih. ; bottom heat, ib. ; 

 lateral rootlets of vviieat, 432 ; roots as 

 reservoirs of nourishment, ih. ; functions 

 of carrot and turnip roots, ih. : object of 

 the winter rest in wheat, 433 ; fungi 

 on roots of leguminous plants, ib. ; in- 

 vestigations of M. Desmazieres, 434 ; 

 Anderson on tm-nips, ih. ; process of 

 vegetation and chemical changes, ih. ; 

 Alirand's examination of tiie oat, 435 ; 

 function of leaves, ih ; conclusions, ih. 



, on the storing of, P. E. [G. Jonas), 



see " Storing,'' xxv. 358. 



Root-ditching, in Essex (severing the 

 roots of trees which extend into the 

 fields) (Baker), v. 16. 



BOTATION. 



Rosier, Abbe', on the nitrificatiou of soil, 

 xxiii. 354. 



Rot, the, in sheep (R. Smith), viii. 23. 



, its origin explained, (L. Playfau-), 



iv, 255. 



, R. Bakewell produced it in" 'his 



sheep in order to forward their fatten- 

 ing, iv. 262. 



, on the liver fluke in sheep, by J, B. 



Siraonds, xv. 277 ; xxiii. 64 ; see " Sheep 

 rot." 



Rotation of crops, on the turnip soils of 

 of Northumberland (Grey), ii. 161. 



, on heavy lands, by \V. Stace, prize 



essay, iv. 169. 



, table of tlie inorganic matters drawn 



from the soil by one com-se of crops on 

 the four-com-se system, by Professor 

 Johnston, iv. 178. 



, statement of the various systems of 



cropping in the South of Scotland on 

 dificrent varieties of land, by T. 

 Bahner, iv. 194 ; on rich loam, ih. ; 

 dry turnip-land, ih. ; light sandy soil ; 

 195 ; rich clay, ib. ; hard clay soil, ib. 



, statement of a new and successful 



rotation of crops for heavy clays, by J, 

 S. Nowlson of Northam, Herefordshire, 

 iv. 409 ; on a farm of 200 acres, rotation 

 on arable land, 410. 



of crops in Cheshire (Palin), v. ; on 



sand-land dairy farms, 60 ; on clay- 

 land dairy farm, 62 ; on sand-land 

 arable farm, 63; on clay-land arable 

 farm, 64. See "Clieshire." 



in Wiltsliiro (Little), v. 162; on 



flinty and chalky loams, ih. ; on light 

 flinty soils, 163 ; on sandy loams, 165. 



, J. Towers on, i. 283 ; note by the 



Rev. W. L. Rham, 292. 

 at Stinchcombe in Glonccstershiro 



(Morton), i. 388. 



in Nottinghamshire (Corringham), 



vi. 7, 23, 25. 



on the chalk of Kent (Buckland), 



vi. 254. 



in tlic Isle of Sheppy, vi. 257. 



in the Isle of Thunet, vi. 259. 



on the Cornish granite (Karkeek), 



vi. 404. 



on tlie Cornish grauwacke, vi. 413. 



on the light sands of Cambridge- 

 shire (Jonas), vii. 40; on its heavy 

 soils, 52 ; ab.sence of, on its fenlauds, 

 70. 



in the Lincolnshire fens (Clarke), 



viii. 119. 



in Sussex, by J. Farncombe (in the 



Soutlidowns), xi. 75 ; (in the eastern 

 district;, 80 ; (in the "VVeald of Sussex), 

 81. 



