54 



GENERAL IXDEX TO ROYAL AGRICULTURAL JOURNAL. 



DRAINAGE. 



retention of heat by soils, Davy on, 

 127-129 ; cause and physical action of 

 dew, 130 ; hoar-frost is frozen dew, 131 ; 

 drainage, effect of, on the entrance and 

 exchange of air, 132 ; the amount of 

 dew precipitated varies with tlie soil 

 and the leaves of different plants, ih. ; 

 soils difference of tlieu" attraction for 

 dew, ib. ; sands are jjowerful attractors, 

 lb. ; the atmosphere near rivers, and of 

 the iiplands, 133 ; tiie action of the 

 leaves of dilfcrent plants on dew, ib. ; 

 modes of retaining dew by different 

 plants, ib. ; as to moonshiny or clear 

 and dewy nights advancing putrefac- 

 tion, 135 ; tlie covering of j)lants to 

 protect tlicm from cold explained, ib. ; 

 the passage of sheep over clover covered 

 with hoar-frost, 130 ; experiments on 

 the tc-mperature of soils, 137 ; by 

 establishing a free passage for water 

 through the soil, il). • Schubler's ex- 

 periments at Tubingen and Geneva, 

 138; Leslie's experiments, 13'.); Mr. 

 Parkes' own experiments at Kcdmoss 

 near Bolton, 140; thermometers in it 

 at different depths, 140, 141; result of 

 observations, 142 ; facts to be ascer- 

 tained by experiment, 145 ; on the 

 quantity of rain compared with the 

 quantity of water evaporated from or 

 iiltered through a soil, witii some re- 

 marks on drainage. 14G ; the register 

 kept by Mr. John Dickinson of Abbot's 

 Hill in Hertfordshire, 14G ; the portion 

 of rain wliich filters through the soil, 

 148 ; tliat which falls from October to 

 March, 149 ; when the soil is in its 

 di-iest state, ib. ; the mean excess of 

 rain-water to be disposed of during the 

 six coldest mouths, ib. ; depth of rain 

 which fell monthly during lS3l» to 

 1843, 150 ; table of rain which fell in 

 those 8 years, in inches and tons jkt 

 acre, 151 ; amount of a very heavy rain, 

 153 ; running of a deep and a shallower 

 drain, 154 ; Mr. Hammond's practice 

 in draining stiff clay, 156 ; the mean 

 annual rain in Ijondon, 157. 



DuAiNAGE, Sii' J. Graham on the frequent 

 dram system, i. 29. 



, report of several operations in 



thorough-draining and subsoil-plough- 

 ing at Oaklev Park, by Mr. R. White, 

 33, 248. 



, on the mode of making and using 



tQes on the Stow Hall estate in Norfolk, 

 described by J. Wiggms, i. 350. 



, stoppage of di-ains by the roots of 



plants and trees, i. 3G4. 



in Nottinghamshii-e, vi. 30. 



Drainage, on reducing the cost of per- 

 manent drainage, by Josiah Parkes, vi. 

 125. 



, on deep drainuig, by the Eight 



Hon. C. Arbuthnot, vi. 129. 



system of Cornwall (Karkeek), vi.421. 



, deep, the theory of, by J. C. Clut- 



terbuck, vi. 489. 



, on deep, by Right Hon. C. Arbuth- 

 not, vi. 573. 



, on the best method of draining 



running sands, by W. Linton, a prize 

 esstxy, vii. 115. 



, by task-work, how paid for, by 



H. Raynbird, vii. 131. 



, on draining, by J. Parkes, vii. 249 ; 



W. Blighs work, ' The English Im- 

 prover Improved,' 252 ; deposit in 

 dniiiiiug-pipe at Drayton Manor, 201 ; 

 deptii to which worms penetrate, 200; 

 the quantity of salt in the soil in which 

 whciit will vegetate, 208 ; on air-drains, 

 209 ; the use of cesspools in, 270. 



, on cheapness of, by P. Pusey, vii. 



520. 



in Sufl'olk, by H. Raynbird, viii. 



278 ; its extent and antiquity in Suffolk, 

 309. 



, pastures liable to be burnt up im- 

 proved by draining, by R. Smith, ix. 11. 



, on the failure of deep draining on 



certain strong clay subsoils, and tlie 

 injurious effects of sinking the water 

 too far below the roots of plants in very 

 porous, alluvial, and peaty soils, by 

 W. B. Webster, ix. 237. 



, jiractical experiments on the air- 

 drainage of land, by S. Hutchinson, ix. 

 340. 



, on di-aining with fir-boughs, by 



Lord Portman, ix. 453. 



in Devonshire (Tanner), ix. 470. 



, sandy lands in the N. R. of York- 

 shire (Milbum), ix. 509. 



, a dress for drainers, by the Marqui-s 



of Westminster, x. 51. 



, on the stoppage of drains by an 



earthy deposit, by Lord Portman, x. 

 119 ; analysis of deposit, by J. T. Wav, 

 121. 



, an improved drain level described, 



by T. Cooke, x. 165. 



, C. Arbuthnot on the advantages of 



deep, X. 490. 



, on deep drainage, by P. Pusey, x. 



503. 



, on suiting the depth of drainage to 



the circumstances of the soil, x. 507. 



, on the mischief arising from drain- 

 ing certain clav soils too deeply, by 

 W. B. Webster, "xi. 311. 



