PTEROCLES 



277 



PULVIS 



wing; Jcarpos, fruit.] A plant belonging to 

 Leguminacese. P. marsupium= Kino tree. 



Pterocles, (Wo-klez). A bird belonging to 

 Tetraonidae. 



Pterodactyles, (ter-6-dak'tilz). [Gk. pttron, 

 wing; daktylos, finger.]=Winged lizard: ex- 

 tinct reptiles, of which one of the digits are 

 prolonged to support apatagium; fossil re- 

 mains found in Kentish chalk; also called 

 Ornithocephalus. 



Fterodactylus:= Pterodactyles, q.v. 



Pterophori, (ter-of'o-ri). [Gk. pteron, wing; 

 phoreo, I bear.] = Plume-moths or feather- 

 bearers: a family belonging to Lepidoptera. 



Pteropoda, (ter-op'o-da). [Gk. pteron, wing; 

 pous, foot.] Small marine carnivorous mol- 

 lusca which swim by fin -like feet, have 

 shells which are either straight or regularly 

 curved, and are never parasitic ; belong to 

 Encephala, q.v., found from Lower Silurian 

 until now. 



Pteropus, (ter'o-pus). [Gk. pteron, wing; pous, 

 foot.] An "animal belonging to Cheiroptera. 

 P. personatus= Fox-bat. 



Pterosauria, ( ter-o-saw'ri-a ). [Gk. pteron, 

 wing; saura, lizard.]=Flying lizards: ex- 

 tinct reptiles, with large bead and long jaws, 

 found in Mesozoic beds, having a wing-like 

 expansion of akin, as in bats: comprise 

 dimorphodon, rhamphorhynchus, and ptero- 

 dactylus; also called Ornithosauria, q.v. 



Pterygoid, (ter'i-goid). [Gk. pteryx, wing; 

 eidos, form.] A bone in the skull of verte- 

 brates ; in man called the pterygoid process 

 of the sphenoid bone. 



Pterygotus, (ter-ig'6-tus). [Gk. pteryx, wing; 

 ous, ear.] A lobster- like crustacean, re- 

 mains of which are found in Old Red Sand- 

 stone. 



Ptilorhynchus, (til-o-ring'kus). [Gk. ptilon, 

 plume; rygchos, beak.] A bird belonging 

 to Corvidse, found in the tropics. P. holo- 

 seriseus Bower-bird. 



Ptolemaic system, (tol-e-ma'ik). [Ptolemy.] 

 An obsolete system of astronomy, in which 

 the earth was supposed to be immovable, 

 and the sun and stars to revolve round it. 

 Ptolemoeus, ( tol-e-me'us ). [Classical.] A 

 plain in the Moon, which is more than 100 

 miles in diameter. 



Ptyalin, (ti'a-lin). [Gk. ptyelon, saliva.]= 

 Salivary diastase: the essential constituent 

 of the sali va=Diastase of germinating barley. 

 Pubis, (pu'bis). v. Innominate bone. 

 Puccinia, (puk-sin'i-a). Mildew : a fungus, 

 found on living plants, belonging to Conio- 

 mycetes ; v. Mildew. P. graminis = Corn- 

 mildew=Ergot. 

 Puddingstone, (pod'ing-st6n)=Conglomerate, 



q.v, Pebbly sandstone. 

 Puddler's-ore. A variety of red hfetnatite. 

 Puddling, (pud'dling). 1. A process by which 

 carbon and silicon are removed from iron 

 ore. 2. A process by which a mixture of 

 clay, sand, &c., is made water-tight, so that 

 it serves for canals, &c. 



Puerperal, (pu-er'per-ai). [L. puer, child; 

 pario, I bring forth.] Belonging to child- 

 birth. 



Puff. P. adder=C\otho arietans : a viperine 



snake. P. 6a^=Lycoperdon, q.v. P. balls= 



Gasteromy cetes, q. v. P. birds = Bar bets, q. v. 

 Puffing, ( puffin ). [The French name.]= 



Puffinus = Fratercula arc- 



tica: a marine diving-bird, 



belonging to Laridse. 

 Puffing -Billy. A popular \ i^? 



name given to an early form ^ 



of the locomotive steam 



engine. 

 Pugmill. A mill for mixing 



clay, &c. 

 Pulex, (pQQeks). [The Latin 



name.]=Flea, q.v. P. irri- 



tans = Common flea. P. 



penelrans=Chigoe, q.v. 

 Pulicaria, (pu-li-ka'ri-a). [L. pulex, flea.] 



Flea-bane: a plant belonging to Asteracere. 

 Pulicidse, ( ptt-lis'i-dS ). (Pulex, q.v.; Gk. 



eidos, form.] A family of insects, belonging 



to Aphaniptera, of which the flea is the type. 

 Pulley, (pol'li). [A.-S. pullian.] A circular 



lever, of which the 



centre is the fulcrum; 



a wheel on the sur- 

 face of which a rope 



or chain works in a 



groove. 



Pulmobranchiata,(pul- 

 mo-brang'ki-a-ta). 

 [Gk. pulmo, lung ; 

 bragchion, gill. ] = 

 Pulmogasteropoda, q.v. Pulley. 



Pulmogasteropoda, (pul-mo-gas-ter-op'o-da). 

 [L. pulmo, lung; Gk. gaster, belly; pous, 

 foot.]=:Snails, slugs: animals, belonging to 

 Gasteropoda, who breath by means of lungs, 

 and move by means of an extensile foot. 



Pulmonaria, ( pul-mon-a'ri-a ). [L. pulmo, 

 lung.J=l. Lung-wort: an herb belonging to 

 Boraginaceae. 2. A sub-division of Arachnida. 



Pulmonary, (pul'mon-a-ri.] [L, pulmo, lung ] 

 P. artery; conveying blood from the heart 

 to the lungs. P. vein: conveying blood from 

 the lungs to the heart. P. circulation 

 Lesser circulation: between the heart and 

 lungs. 



Pulmonata, (pul-mon-a'ta). [L. pulmo, lung.] 

 Gasteropoda able to breathe in air, by means 

 of a pulmonary sac. 



Pulmonifera, (pul-mon-if'er-a.) [L. pulmo, 

 lung; fero, I bear. ]= Pulmogasteropoda, q.v. 



Pulp, (pulp). [Pulpa, the Latin word.] The 

 semi-fluid softer parts of fruit. 



Pulse, (puls). [1. L. pulso, I beat; 2. Puls, 

 the Latin name.] 1. The throbbing of the 

 arteries, especially as felt in the wrist. 2. 

 A general term for peas, beans, and other 

 leguminous plants. 



Pulverization, (pul-ver-i-za'shun). [L. pul- 

 vero, I powder.] Reduction of a solid sub- 

 stance to powder. 



Pulverulent, (pul-ver'vi-lent). [L. pulvero, I 

 powder. ]=Friable: easily reduced to powder. 



Pulvis fulvinans, (pul-vis ful'min-ans). [The 

 Latin words.] An explosive compound, con- 

 sisting of nitre, sulphur, and potassic car- 

 bonate. 



