CONTENTS. 



VII. 



Pear Trees, process to prevent the 

 bliffh* in . 



Peach Trees, on the cultivation of, and 

 prevention of disease in 



Peach Trees, early puberty of 



Peach Trees, experiments on prunin 

 and training 



Pencils, Lithographic . 



Phosphorus 



Phycotyledonous 



Pistils of plants 



Pith of wood . 



Plants, food for 



Plants, their organization — Roots, 

 Trunk, and Branches, their struc- 

 ture — The Epidermis — Cortical and 

 Alburnous parts of Leaves, Flowers, 

 and Seeds — The Chemical Constitu- 

 tion of the organs of plants, and the 

 substances found in them — Mucilagi- 

 nous, Saccharine, Extractive, Resi- 

 nous and Oily Substances, and other 

 Vegetable Compounds, their arrange- 

 ments in the organs of plants, their 

 composition, changes, and uses. Ar- 

 ticle, Agricultural Chemistry, from 

 page 95 to end of volume. 



Platinum 



Plume 



Pollen 



Potatoes, Knight's method of culture 



Potatoes raised from cuttings . 



Potato, curl, process to prevent 



Potato, Rohan 



Potassium 



Potash 



Printing, Stereotype, metalographic 



Printing, hints on various modes of 



Prussic Acid counteracted by cold water 



34 



35 

 55 



137 

 10 



77 

 108 

 107 

 105 

 120 



77 



107 



107 



53 



84 



144 



102 



77 



85 



10 



147 



80 



Quinine, adulteration in 



. 100 



Radicle of a plant . . . 107 



Rail-Roads, &c. &;c. . . . 127 



Rail-ways, limits of speed on . .118 



Rasps and Files made of clay . .160 



Resin . . . . .132 



Rheumatism, to prevent or cure , 34 

 Rheumatism, inflammatory, treatment of 88 



Roof, a new species of . 14, 135 



Salt, hints on furnishing animals with 85 

 Salts, Soluble . . . .152 



Sciatica, treatnfent of . . .88 



Seed of vegetables . . .107 



Seeds, time for sowing different kinds 192 

 Sheep, remedies for diseases in 12, 24 



Sheep, method to cure the diseases of 

 the feet . . . .68 



Sheep, Syrian . . .119 



Sfieep, stretching in, how to cure . 128 

 Silk Worm and Silk Manufacture 17, 40 

 Silk, Cocoons, Silk Worm Eggs, and 



Cocoonery .... 

 Silk, suggestions for experiments on 



feeding Silk Worms, &c. (fee. 

 Silk Culture .... 

 Silk, M. Road's remarks on bleaching . 

 Silk Manufacture 

 Silver 



Sirup and Sugar, from grapes 

 Soda . 

 Sodium 

 Spines 



Squinting, remedy for 

 Stains, fruit, removed by salt 

 Starch , 



Stamens 



Steam, Engine, Locomotive 

 Steam Engine, new 

 Steel, improved by manganese 

 Strontium 

 Style . 



Sub-duple ratio 

 Subscribers, notice to . 

 Sugar, liquid, from apples and pears . 

 Sugar, process of converting beets into, 



Barruel's method 

 Sugar, process to convert starch into — 



Kirchoff's method . 

 Bullion Lagrange's method 

 Sugar from potato starch, by Dr. Tu- 



hiU ..... 

 Sugar ..... 

 Sulphuric or vitriolic acid 

 Sulphur .... 



Tables, mahogany, method of polishing 

 Tannin .... 



Tendrils .... 



Tetanus cured by extreme external cold 100 

 Timber, proper time to cut . . 6 



Timber, on means to preserve it 42, 192 

 Tin . . . . .77 



Tomato pies. . . . .29 



Tools, method to temper steel edge . 1 1 

 Transferring from stone to paper . 13 



Tracheae .... 104 



Tree, acacia . . . .68 



Trees, remarks on planting . . 141 



Turnips, on preserving . . 67 



Tupentine, on applying it to clothes . 85 



Varnishes, process to make . . 26 



Vegetation, T. A. Knight's Theory of . 49 

 Vegetables, method of producing new 



varieties of . . . . 128 



Vegetables, the effects of temperature 



in preserving . . .130 



79 



64 



82 

 177 

 . 84 

 . 77 

 . 142 

 94, 150 

 . 78 

 . 105 

 . 87 

 . 118 



: 109 



. 107 

 . 33 

 . 97 

 . 135 



. 78 

 . 107 

 . 89 

 . 192 

 145 



20 



21 



22 



23 



110 



41 



76 



118 

 123 

 105 



