QUA 



PUTTY. Ill building, a fine ce- 

 ment of lime only. In glazin?, a com 

 poiinfi of drying oil, linseed oil, and 

 whiting. 



P VLORUS. The passage or valve 

 of the stoinacli into the intestines. 



PYRITES. Native sulphurets of 

 iron or copper. 



PYRO (from nvp, fire). A com- 

 mon chemical prefix, indicating com- 

 poimds modified by the action of heat, 

 as pvroplio.spboric, pvrotartaric acids. 

 PYROACETIC SPIRIT. A vol- 

 atile, inflammable, and limpid fluid, 

 formed by the distillation of acetate 

 of lead. It is also f;alled acetone. 



PYROLIGNEOUS ACID. The 

 vinegar (acetic acid) procured by dis- 

 tilling wood. It contains creasote 

 and other tarry compounds, but is 

 extensively used to form solution of 

 iron or red liquor for dyers. Its com- 

 pounds are called pvrolignites. 



P Y R O L I G N i; O U S SPIRIT, 

 PYROXYLIC SPIRIT. Hydrate of 

 mythylene. wood naphtha, a very 

 vwlatile, inflammable fluid, from dis- 

 tilled wood, sometimes used for 

 lamps. It is one of the most pow- 

 erful antiseptics, but of an unpleas- 

 ant odour. 



PYROMETER. An instrument 

 for measuring degrees of heat above 

 600^ Fahr. They are all very im- : 

 perfect except Daniel's, and seldom 

 used. 



PYROSIS. Acidity of the stom- 

 ach, with a discharge of hot fluid into 

 the throat and mouth. 



PYROXENE. Augite. 



PYROXYLIC SPIRIT. Pyrolig- 

 neous spirit 



PYXIDIUM (from Trv^ir, a small 

 box). A fruit which splits into an 

 upper and lower half, as that of the i 

 pimpernel. 



Q. 



QUADRICORXES. A family of 

 wingless insects, with four antennae. 



QUADRIFID. Four-cleft. 



QUADRILATERAL. Four-sided. 



QUADRIPENXATES. A tribe of 

 insects with four membranous wings. 



QUAGGA. A quadruped allied to 

 the zebra. 

 648 



QUI 



QUAGMIRE. A muddy, soft bog 

 or marsh. 



QUAIL. The genus Cot ur nix. 

 Birds like the partridge, but of pas- 

 sage. 



QUAKING GRASS. The genus 

 Briza. 

 QUART. The fourth of a eallon. 

 QUARTAN. An intermittent fe- 

 ver, appearing every fourth day. 



Q U ARTE R. Eight bushels, a 

 fourth part. 



QUARTZ. .Silica, silicic acid crys- 

 tallized, rock crystal. 



QUARRY. A pit or excavation, 

 from whence stones are taken, by 

 blasting or otherwise. 



QUASSIA. A bitter wood, from 

 the Q. cxrelsa of South America. A 

 strong decoction, sweetened with su- 

 gar, is a certain and safe poison for 

 flies. 



QUEEN POST. In building, an 

 upright post in a roof for suspending 

 the beam when the principal rafters 

 do not meet in the ridce. 



QUERCITRON BARK. The in- 

 ner bark of the black oak. See Oak. 

 QUICKLIME. Caustic, fresh- 

 burned lime. 



QUICKSILYER. Mercury. 

 QUICKS. The young white thorns. 

 QUICKSET HEDGE. A hedge 

 of white thorn. 



QUINATE. Five- parted. 

 QUINCE. Cydonia vulgaris. A 

 well-known fruit, readily cultivated 

 from seed, cuttings, and suckers. 

 The stocks are much used for working 

 pears and apples, which they bring 

 forward, but render short-lived. The 

 Portuguese, eatable, orange, and 

 musk kinds are most esteemed ; the 

 Chinese is very long. 



The quince prefers a moist, loose 

 soil ; it requires little pruning, ex- 

 cept the removal of suckers. The 

 fruit is chieflv used for preserves. 

 QUINCUNX. In the following 



order °o°, with one at each corner. 



o o _ ' 



and a fifth in the centre of the square 

 QUININE. The active principle 



of Peruvian bark, a white, crystalline 



alkaloid. 



QULNOA or PERUVIAN RICE. 



