CHAMBERS'S INFORMATION FOR THE PEOPLE. 



Polypodiaceae, sub-order of ferns, in. 



Polyzoa, class in Zoology, 1 50. 



Pony, a horse under thirteen hands in height, 613. 



Poplar, nature and culture of, 600. 



Poppy (papaver). See Papaveracece, in Botany, 

 90. 



Porcelain or china, manufacture of, 359. 



Porcupines, in Zoology, 187. 



Porifera or Spongidea, in Zoology, 133. 



Pork, in Dietetics, 745 ; in Cookery, 758. 



Porosity, a property of matter, 194. 



Porphyry (Gr.porphyra, purple), 18. 



Porpoise (family Delp/iinida:}, in Zoology, 180. 



Porridge, oatmeal, 740, 768. 



Porter, 752. 



Posting, in Inland Conveyance, 435. 



Potassium, 307, 327. 



Potatoes, field, 527 ; garden, 552 ; in Dietary, 741 ; 

 in Cookery, 762. 



Pot-au-feu, in Cookery, 768. 



Potstone, the lapis-ollaris of the ancients, 395. 



Pottery, composition and manufacture of, 355. 



Poultices, in Medicine, 784. 



POULTRY, management of, 662 ; in Dietetics, 746. 



Power, sources of, in Machinery, 224. 



Prairies, the extensive river-plains of North 

 America, 59. 



Prawns and shrimps, in Zoology, 143. 



Precipitate, precipitated, in Chemistry, 310. 



Presbyopia, or long-sightedness, 126. 



Prescriptions for home use, in Medicine, 784. 



PRESERVATION OF HEALTH, 721-736. 



Pressure, centre of, in Hydrostatics, 228. 



Primary or non-fossiliferous system in Geology, 24. 



Primitive limestone, in Geology, 23. 



Primrose, nature and culture of, 567. 



Prism, prismatic, in optical science, 245. 



Proboscidea, animals having a proboscis or trunk, 

 184. 



Projectiles (pro, fonvard, jaceo, I throw), laws of, 

 in Natural Philosophy, 201. 



Promontory, in Physical Geography, 52. 



Propagation, in Horticulture, 563. 



Proscenia, the, in Architecture, 470. 



Protista, in Zoology, 129. 



Protoplasm or sarcode, in Zoology, 129, 132. 



Protozoa, sub-kingdom in Zoology, 132. 



Pruning, in Gardening, 579 ; in Forestry, 605. 



Prussian blue, manufacture of, 340. 



Prussic acid, 335. 783. 



Pseudo-podia, in Zoology, 132. 



Ptarmigan, a member of the Grouse tribe, in 

 Zoology, 172. 



Pterichthys, a fossil fish of the Old Red Sand- 

 stone, figured, 26, 1 60. 



Pterodactyle (Gr. pteron, a wing, and dactylus, a 

 finger), a fossil finger-winged or flying reptile, 166. 



Pteropoda, in Zoology, 153. 



Pterygotus, fossil crab, 26. 



Puddings, in Cookery, 764 ; in Dietetics, 739. 



Puddingstone, in Geology, 18. 



Puddling, 408. 



Puff-ball (Lycoperdori), 112. 



Pulleys, in Mechanics, 213, 219. 



Pulmonary, of or pertaining to the lungs. 



Pulmonifera (pulmo, a lung), snails and slugs, in 

 Zoology, 153. 



Pulse, in Human Physiology, 119. 



Puma (FeUdce), 187. 



Pumice (Lat. pumex\ in Geology, 18 ; in Miner- 

 alogy, 39 6 - 



818 



Pumps, air, 238 ; suction, 239 ; forcing, 239. 



Pupa, the chrysalis state of the insect, or that 

 intermediate between the caterpillar and the 

 insect, 146. 



Puritan style in dress, 796. 



Purple of Cassius, 413. 



Purree, colouring-matter, 344. 



Puzzolana, a volcanic product, in Fictile Manufac- 

 tures and Mineralogy, 366, 396. 



Pylorus, the orifice by which the stomach com- 

 municates with the intestines, 114, 115. 



Pyramids, in Architecture, 465. 



Pyrites, a compound of sulphur and iron, 398. 



Quadrant, in Astronomy and Navigation, 461. 

 Quadrumana (literally, four-handed), in Zoology, 



189. 



Quails, a rasorial family, in Zoology, 172. 

 Quartz, in Chemistry, 327 ; in Mineralogy, 394 ; in 



Geology, 18. 

 Quartzite, 23. 



Quaternary, or Recent Period, in Geology, 32. 

 Quercitron, 342. 



Quills, rearing of the goose for, 670. 

 Quince, character and cultivation of, 583. 

 Quinine, in Medicine, 779. 

 Quinsy, treatment of, 770. 



RABBIT, in Zoology, 187 ; domesticated, 66 1 ; as 



Food, 746 ; in Cookery, 757. 

 Rabies, hydrophobia, or canine madness, 695. 

 Radishes, in Gardening; horse-radish, 553. 

 Rags, in paper-making, 382. 

 Rails (family Rallidcz), in Ornithology, 170. 

 Railways, their history and construction, 440-448 ; 



legislation and management of, 442 ; signals, 



443 ; foreign railways, 447. 

 Rain, causes and signs of, 37, 40, 47 j rain-water, 



498. 



Rain gauge or measurer, 40. 

 Rainbow, in Meteorology, 47 ; in Optics, 247. 

 Ramphastidae (Toucans), in Ornithology, 173. 

 Ranunculaceae, in Botany, the Crowfoot tribe, 89 ; 



in Floriculture, 567. 

 Raptores (Lat. rapio, I seize), an order of birds, 



in Zoology, 175. 



Rasores, or Scraping-birds, in Zoology, 171. 

 Raspberry, character and cultivation of, 587. 

 Rat, Muridcs (Mouse family), order Rodentia, 187. 

 Rattlesnake, in Zoology, 163. 

 Rays, cartilaginous fishes, in Zoology, 161. 

 Reading, as an amusement, 733. 

 Realgar, red sulphuret of arsenic, a pigment, 415. 

 Reaping and reaping implements, 530. 

 Recipe, or prescription, in Medicine, 784. 

 Reckoning, mode of working a, in Navigation, 



461. 



Rectum, 116, 771. 

 Reflection of light, 242. 



Refraction of light, 243 ; double refraction, 252. 

 Reindeer, in Zoology, 182 ; as a beast of draught, 



432. 



Relay, in Galvanism, 297. 

 Renaissance style, in Architecture, 474, 476. 

 Rennet, in Dairy Management, 639. 

 Replacement in Chemistry, 314. 

 Repose, hygienic, necessity of, 729. 

 Reptiles (Lat. repo, I creep), in Zoology, 162-166. 

 Repulsion, property of matter, 195. 

 Reservoirs, principles and construction of, 504. 

 Respiration, organs of, in Human Physiology, 119. 



