CONTENTS. 



V 



ARTICLE PAGE 



XXXIII. — Observations on the Natural History and Economy of the 



Turnip Saw- Fly, and its Black Caterpillar, called the 

 Black Palmer, Black Canker, Black Jack, Black Slug, 

 and Nigger, or Negro. By John Curtis, F.L.S. . . 364 



XXXIV. — On the Improvement of Peat Soils.. Prize Essay. By 



Cuthbert W. Johnson 390 



XXXV. — On the Practice of English Farmers in the Improvement 



of Peaty Ground. By Philip Pusey, M.P. . . .400 



Miscellaneous Communications and Notices : — 



I. — On some Varieties of Wheat. By Sir Charles Burrell, 



Bart., M.P 147 



II.— On a Productive Variety of Wheat. By Robert Blyth 



Harvey, Esq. ,148 



III. — On the Marquis of Tweeddale's Tile-making Machine. 



By James Hunt, Esq. . . . , . .148 



IV. — On the Necessity of Care in the Preservation of Agricul- 



tural Implements. By W. Crosskill . . .150 



V. — 1. Experiments on Nitrate of Soda and Saltpetre. By 



WiUiam Stratford Dugdale, M.P 259 



2. Trial of Nitrate of Soda. By Joshua Rodvvell . 260 



3. Trials of Nitrate of Soda. By Charles Newman . 260 



VI. — Some Account of the Cultivation of a Cold Clav Farm. 



By the Rev. G. F. Holcomb . . . ' . .262 



VII. — 1. Experiments on Manures and on the Growth of Tur- 

 nips. By W. Miles, M.P 264 



2. On the Comparative Efficacy of Bones and of Poitte- 

 vin's Manure, as applied to Turnips. By R. A. Christo- ' 

 pher, M.P 267 



3. Experiment on the Growth of Swedes. By Henry C. 

 Compton, M.P 269 



4. Experiment on Swedes. By Isaac Everitt . . . 270 



VIII. — Notice of Contributions of Specimens of Wheat to the 

 Museum of the Society ; with Instructions to future 

 Contributors. By the Rev. J. S. Henslow, M.A. . 271 



IX. — On the Apphcation of a Marine Peat in Carnarvonshire as 



Manure. By the Rev. J. V. Vincent . . .417 



X.— On the Necessity of Compounding Mineral Manures. By 



F. Falkner . . . . . . . .418 



XI. — Statement of the Comparative Quality of Milk from 

 Alderney and Kerry (Irish) Cows upon the Farm of the 

 Hon. Robert Clive, at Oakley Park, 1840. By Richard 

 White 420 



Xn. — Description of a New Subsoil-Plough. By Charles Gabell 421 



